How to Make Kombucha for the First Time

Making kombucha for the first time feels more complicated than it really is. The SCOBY looks strange, the jar changes slowly, and normal fermentation signs can look suspicious before you know what you are seeing. A cloudy batch, brown yeast strands, a sunken SCOBY, or a thin film forming on the surface can all look wrong to a beginner, even when the batch is healthy.

Kombucha is a simple fermented tea made with sweet tea, starter liquid, and a living culture. The first batch does not need to be perfect. It needs enough starter liquid, plain tea, plain sugar, a breathable cover, stable room temperature, and patience.

Most beginner failures come from weak starter liquid, cold temperatures, sealed jars, adding the SCOBY to hot tea, or mistaking normal yeast for mold. This guide walks through the full first fermentation process, what each step does, what normal kombucha looks like, and how to recognize the few problems that actually matter.

First Batch Kombucha Cheat Sheet

Old School Ferments — oldschoolferments.com

The Recipe: 1 Gallon

Ingredient	Amount
Filtered water	14 cups
Black tea bags	8 bags
Plain white cane sugar	1 cup
Starter liquid	2 cups
SCOBY	1 healthy SCOBY

The Steps

Step	What To Do
Brew	Boil half the water. Dissolve sugar. Steep tea 5 to 10 minutes. Remove bags without squeezing.
Cool	Add remaining cold water. Wait until the tea is fully at room temperature. Do not rush this.
Combine	Pour cooled tea into a glass jar. Add starter liquid. Stir gently. Place SCOBY on top.
Cover	Use a coffee filter or tightly woven cotton cloth. Secure with a rubber band. Never use a sealed lid.
Ferment	Keep at 70°F to 78°F, away from direct sun. Leave it alone.
Taste	Start tasting around day 7. Stop when the sweet tart balance suits you.
Save	Reserve 2 cups finished kombucha as starter for the next batch. Keep the SCOBY with it.

Fermentation Timeline

Day	What To Do
Day 0	Set up and cover. Leave it.
Days 1 to 6	Do nothing. Do not open.
Days 7 to 10	Begin tasting.
Days 10 to 14	Decide when it is done.
Done	Reserve starter. Bottle or refrigerate.

Normal vs Problem

What You See	Normal?
SCOBY floating	✓ Yes
SCOBY sinking	✓ Yes
Brown stringy threads	✓ Yes, yeast strands
Cloudy liquid	✓ Yes
Thin film at surface	✓ Yes, new pellicle
Vinegar smell	✓ Yes
Fuzzy green, black, blue, white, or pink growth	✗ No, mold. Discard.
Rotten smell	✗ No, do not drink.

First Batch Decision Tree

Rotten smell? → Discard.
Fuzzy surface growth? → Mold. Discard everything.
Brown strings in liquid? → Normal yeast. Keep going.
Smells like vinegar? → Fermentation is working. Keep going.
Still very sweet after 10 days? → Probably too cold. Move to a warmer spot.
Tart and pleasant? → Done. Bottle or refrigerate.

Old School Tip: Print this cheat sheet or save it on your phone before starting your first batch. The hardest part of beginner kombucha is not the recipe. It is knowing what to ignore and what to take seriously.

Quick Start: If You Can Make Sweet Tea, You Can Make Kombucha

Kombucha is sweet tea fermented by a living culture. That culture, usually called a SCOBY, works with starter liquid to turn sweetened tea into a tart, lightly acidic drink over one to two weeks.

First fermentation creates the kombucha itself. Second fermentation is optional and happens later in sealed bottles when you want carbonation and flavoring. Your first job is not fizz. Your first job is making a clean, healthy first ferment.

The basic process is straightforward:

1. Brew sweet tea.
2. Cool it completely.
3. Add starter liquid.
4. Add the SCOBY.
5. Cover the jar with breathable cloth.
6. Let it ferment at room temperature.
7. Taste around day 7.
8. Save starter liquid for the next batch.

A good first batch depends more on correct setup than constant attention. Use enough starter liquid, keep the jar out of direct sunlight, avoid sealed lids during first fermentation, and do not disturb the batch before it has had time to work.

Your first batch is a reference point. It shows how your kitchen temperature affects timing, how strong your starter liquid is, and what normal SCOBY activity looks like in your own conditions. Once that baseline is established, later batches become easier to adjust.

Homemade Kombucha At a Glance

Category	Details
Difficulty	Beginner
Hands-on time	About 30 minutes
Fermentation time	7 to 14 days
Yield	About 14 cups, just under 1 gallon after reserving starter
Main needs	SCOBY, starter liquid, tea, sugar, filtered water, glass jar, breathable cover

At-a-Glance Beginner Kombucha Recipe

Designed to drop into a recipe plugin. Full step by step instructions follow below.

Yield: About 14 cups, just under 1 gallon
Prep Time: 30 minutes
Fermentation Time: 7 to 14 days
Total Time: 7 to 15 days

Ingredients

• 14 cups filtered water
• 8 black tea bags, or 2 tablespoons loose leaf black tea
• 1 cup plain white cane sugar
• 2 cups starter liquid, unflavored already fermented kombucha
• 1 healthy SCOBY

Equipment

• 1 gallon wide mouth glass jar
• Pot for boiling water
• Breathable cover, such as a coffee filter or tightly woven cotton cloth
• Rubber band
• Long spoon for stirring

Short Instructions

1. Boil half the water. Dissolve sugar. Steep tea 5 to 10 minutes. Remove tea bags without squeezing.
2. Add remaining cold water. Cool completely to room temperature.
3. Pour cooled tea into a glass jar. Add starter liquid. Stir gently.
4. Place SCOBY on top with clean hands.
5. Cover with cloth and secure with a rubber band.
6. Ferment at 70°F to 78°F, away from direct sun, for 7 to 14 days.
7. Taste around day 7. Stop when the flavor balance suits you.
8. Reserve 2 cups of finished kombucha as starter for the next batch.
9. Refrigerate, bottle for second fermentation, or drink flat.

Notes: Tea must be completely cool before the SCOBY goes in. The SCOBY may float or sink. Both are normal. Never use a sealed lid during first fermentation.

Before You Start: Beginner Confidence Checklist

Run through this before brewing. If every box can be checked, the batch is ready to start.

Ingredients

☐ Plain black tea, unflavored
☐ Plain white cane sugar
☐ Filtered or spring water
☐ 2 cups starter liquid, raw unflavored kombucha from a previous batch, friend, or suitable store bought bottle
☐ 1 SCOBY

Equipment

☐ Clean 1 gallon wide mouth glass jar
☐ Coffee filter or tightly woven cotton cloth
☐ Rubber band
☐ A warm spot, 70°F to 78°F, away from direct sunlight

Mindset

☐ The SCOBY may look strange. That is normal.
☐ The SCOBY may sink. That is normal.
☐ The liquid may look cloudy. That is normal.
☐ Brown strings are usually yeast. That is normal.
☐ The jar should not be opened until day 7 unless there is an obvious problem.

What You Need to Make Kombucha

SCOBY

The SCOBY is the culture that makes kombucha possible. It usually looks like a pale, rubbery disc and may be smooth, lumpy, thin, thick, or streaked with brown yeast. Those variations are usually normal. What matters more is that the culture is stored in strong starter liquid and does not show fuzzy mold or rotten odor.

A SCOBY can come from another brewer, an online supplier, or a bottle of raw unflavored kombucha used to grow a new culture. The culture itself becomes less mysterious once its job is clear. For a deeper explanation, read What Is a Kombucha SCOBY and What Does It Do?.

Starter Liquid

Starter liquid is already fermented kombucha, and it is not optional. It acidifies the fresh sweet tea immediately, protects the early batch, and brings active yeast and bacteria into the jar. For beginners, 2 cups of starter liquid per gallon is the right starting point.

Reducing starter liquid on a first batch is a bad trade. It may seem like a way to stretch the culture, but it weakens the batch at the exact stage when protection matters most. Use raw, unflavored, active kombucha. Avoid pasteurized kombucha, flavored kombucha, or starter liquid that barely smells acidic.

Tea

Plain black tea is the most reliable foundation for a first batch. It provides the tannins and nutrients kombucha cultures expect and gives the brewer a consistent baseline. Green tea can also work, but it produces a lighter brew and is better introduced after the basic process is familiar.

Flavored teas, herbal teas, and teas with essential oils should not be used for primary fermentation, especially on a first batch. Oils and flavorings can weaken the culture over time, and herbal blends may not provide enough structure for the SCOBY. For a full breakdown of which teas work and which ones to avoid, read Best Tea for Kombucha.

Sugar

Plain white cane sugar is the best sugar for a first batch because it ferments predictably and gives the culture a stable food source. Most of the sugar is consumed during fermentation, though the finished flavor still depends on how long the batch ferments.

Honey, brown sugar, maple syrup, coconut sugar, and sugar substitutes can behave unpredictably. They are not ideal for establishing a baseline. Start with plain cane sugar, learn the normal fermentation pattern, then experiment later if desired. For more detail on why plain cane sugar is the right choice, read Best Sugar for Kombucha.

Filtered Water

Filtered or spring water removes a common variable. Chlorine and chloramine in municipal tap water can suppress microbial activity and slow fermentation. Some brewers get away with tap water, but beginners should eliminate the risk from the start.

Filtered water does not need to be expensive or specialized. It just needs to be clean, neutral, and free of heavy disinfectant levels that may interfere with the culture.

Glass Fermentation Vessel

Glass is the best fermentation vessel for beginners. It is inert, easy to clean, does not absorb flavors, and lets the brewer observe the batch without opening the jar. A 1 gallon wide mouth mason jar is the standard starting point because it is easy to find and easy to work with.

Avoid reactive metals, plastic containers of uncertain quality, and anything that previously held strong odors. Kombucha is acidic, so the vessel should be food safe and nonreactive.

Breathable Cover and Rubber Band

First fermentation needs airflow. A coffee filter or tightly woven cotton cloth secured with a rubber band keeps fruit flies and debris out while allowing oxygen in. This cover is part of the fermentation setup.

Do not use a sealed lid during first fermentation. Airtight sealing belongs to second fermentation, when carbonation is being built in bottles. During first fermentation, the culture should breathe.

Optional: Thermometer

A thermometer is not required, but it is useful. A stick on strip thermometer on the jar or a small thermometer near the vessel helps explain slow or fast batches. Temperature has a direct effect on fermentation speed, so removing the guesswork saves time.

Ingredient Ratios for Different Batch Sizes

The 1 gallon batch is the standard because it gives the SCOBY enough room to work and produces enough kombucha to make the process worthwhile. Smaller batches are possible, but they are often harder to regulate and judge.

Batch Size	Water	Tea Bags	Sugar	Starter Liquid
1 quart	3.5 cups	2 bags	1/4 cup	1/2 cup
1/2 gallon	7 cups	4 bags	1/2 cup	1 cup
1 gallon	14 cups	8 bags	1 cup	2 cups

Old School Tip: A quart batch works as a proof of concept, but smaller batches are less forgiving. A half gallon is usually a better small starting point than a quart because temperature and flavor are easier to judge.

Step by Step: How to Make Kombucha

1. Brew the Sweet Tea

Bring about half the water to a boil. Add the sugar and stir until it dissolves completely. Add the tea bags and steep for 5 to 10 minutes, then remove the bags without squeezing them. Squeezing tea bags can release extra bitterness that carries into the finished kombucha.

Add the remaining cold water after steeping. This brings the total volume up and helps cool the tea faster. The goal is strong sweet tea that is fully cooled before the culture is added.

2. Cool the Tea Completely

The tea must cool to room temperature before the SCOBY and starter liquid are added. Warm tea can stress or damage the culture before fermentation begins. The surface can feel cool while the center is still warm, so rushing this step is one of the easiest ways to weaken a first batch.

When in doubt, wait longer. A delayed start is better than adding a living culture to tea that is still too warm.

3. Add Starter Liquid and SCOBY

Pour the cooled sweet tea into the glass fermentation vessel. Add the starter liquid and stir gently to distribute it through the batch. With clean hands, place the SCOBY into the jar.

The SCOBY may float, sink, tilt, or sit halfway down the jar. This does not determine whether the batch will work. A new pellicle forms at the liquid surface during fermentation regardless of where the original SCOBY rests.

Old School Tip: Clean hands are enough for normal SCOBY handling. Kombucha does not require sterile laboratory handling. The starter liquid acidifies the batch and helps protect it as fermentation begins.

4. Cover and Ferment

Secure the cloth or coffee filter over the jar with a rubber band. Place the jar in a stable warm spot away from direct sunlight. A counter away from a window, a pantry, or a cabinet can all work if the temperature is steady.

Kombucha ferments best around 70°F to 78°F for a beginner batch. Below 68°F, fermentation slows. Above 80°F, the batch can become sour faster than expected. For more detail on how temperature affects fermentation, read Best Temperature for Kombucha Fermentation.

Do not use a sealed lid during first fermentation. A sealed jar changes the conditions and can interfere with the culture. Use a breathable cover only.

5. Wait and Taste

Begin tasting around day 7. Use a clean straw, spoon, or small cup. Avoid drinking directly from the jar or contaminating the batch. The goal is to track the movement from sweet tea toward tart kombucha.

A young batch will taste sweet and mild. As fermentation continues, sweetness decreases and acidity increases. The stopping point depends on preference, but the batch should taste recognizably fermented before it is bottled or refrigerated.

If it still tastes sweet after 10 to 14 days, temperature, starter strength, or starter amount should be checked. For that problem, read Why Is My Kombucha Still Sweet?. If it has gone too sour to drink, it can often be used as strong starter liquid for the next batch. For that situation, read Kombucha Too Sour?.

6. Save Starter Liquid for the Next Batch

Before drinking, bottling, or refrigerating the batch, set aside 2 cups of finished kombucha as starter liquid for the next brew. Keep the SCOBY stored in that liquid until the next batch is ready.

This step is what keeps brewing going. Every successful batch should supply the starter for the next one.

Kombucha Fermentation Timeline

Day	What Is Happening	What You Should Do
Day 0	Sweet tea, starter liquid, and SCOBY are combined. The pH begins dropping immediately.	Set up the jar. Cover it. Find a good spot. Leave it.
Days 1 to 3	SCOBY adjusts. A thin film may begin forming at the surface. Yeast becomes active.	Do not open, stir, or move the jar.
Days 4 to 6	Fermentation is active. Yeast strands may be visible. Vinegar aroma may begin developing. New pellicle may form.	Look through the glass if needed. Do not open it.
Days 7 to 10	The batch may enter the drinkable range. Tartness builds.	Begin tasting small samples every day or two.
Days 10 to 14	Flavor becomes more developed and acidic.	Taste and decide when the balance suits you.
After it tastes right	First fermentation is complete.	Reserve starter liquid. Bottle, refrigerate, or drink flat.

Old School Tip: This timeline assumes a kitchen around 72°F to 75°F. A cooler kitchen may push the drinkable range back several days. A warmer kitchen may bring it forward. Temperature is usually the main reason timing changes.

For a deeper timing guide, read How Long Does Kombucha Take to Ferment?.

First Fermentation vs Second Fermentation

First fermentation and second fermentation are different stages with different goals. Confusing them causes many beginner mistakes.

Stage	Purpose	Covered or Sealed?	Time	Result
First Fermentation	Convert sweet tea into kombucha	Breathable cloth, never sealed	7 to 14 days	Flat, finished kombucha
Second Fermentation	Add carbonation and flavor	Sealed bottle, airtight	1 to 3 days at room temp	Fizzy, flavored kombucha

First fermentation makes kombucha. Second fermentation adds carbonation and flavor after the kombucha is already finished. Flat kombucha is still finished kombucha. Second fermentation is optional, not required.

Once first fermentation is reliable, the next skill is learning How to Get Fizzy Kombucha Without Exploding Bottles.

What Normal Kombucha Looks Like

Healthy kombucha can look strange. A floating SCOBY is normal, and a sinking SCOBY is also normal. The original culture may rest at the bottom while a new pellicle forms at the surface. Its position does not determine whether fermentation is working.

A thin film or raft at the top is usually the new pellicle forming. It may look smooth, bumpy, patchy, pale, cloudy, or uneven. Brown stringy threads in the liquid are usually yeast strands. Cloudy liquid is also common during active fermentation and often clears later in the refrigerator.

A sharp vinegary aroma means acidity is building. Small bubbles on the SCOBY or along the jar walls usually come from active yeast. None of these signs are reasons to discard the batch by themselves.

A strange looking batch is not automatically a bad batch. Mold, rotten odor, and fuzzy surface growth are the signs that matter.

Normal vs Problem Chart

What You See	Normal?	What It Means
SCOBY floating	✓ Yes	Working as expected
SCOBY sinking	✓ Yes	Not a problem. New pellicle still forms.
Brown stringy threads in liquid	✓ Yes	Healthy yeast strands
Cloudy liquid	✓ Yes	Active fermentation
Thin film forming at surface	✓ Yes	New pellicle growing
Vinegar smell	✓ Yes	Acidity building correctly
Small bubbles on SCOBY or jar walls	✓ Yes	CO2 from active yeast
Fuzzy green, black, blue, white, or pink surface growth	✗ No	Mold. Discard entire batch.
Rotten or putrid smell	✗ No	Contamination warning. Do not drink.

Take Heed: Fuzzy or powdery growth on the surface of the SCOBY or liquid is a discard sign, especially when it appears green, black, white, blue, or pink. Do not taste the batch. Do not scrape it off and continue. Discard the liquid and SCOBY, then clean the vessel before brewing again.

Surface growth can be confusing on a first batch. For identification help, read White Stuff on Kombucha?, which explains how to tell mold from normal fermentation.

Common Beginner Mistakes

Brewing With Flavored or Herbal Tea

Flavored teas can contain oils or additives that weaken a SCOBY over time. Herbal teas also lack the same structure as true tea. Plain black tea is the best choice for a first batch. Once a reliable baseline exists, other teas can be tested with more control.

Using an Alternative Sweetener

Honey, brown sugar, maple syrup, and sugar substitutes ferment differently from white cane sugar. Some can work in specific contexts, but they are poor choices for a first batch. Plain white cane sugar gives the culture predictable food and produces a reliable baseline.

Brewing Somewhere Too Cold

Cold temperatures slow kombucha dramatically. Below 68°F, the batch may take much longer than expected. A cold batch is often mistaken for a failed batch, especially when it stays sweet after a week.

Using a Sealed Lid

First fermentation requires airflow. A sealed lid changes the conditions and can create problems. Use cloth, a coffee filter, or another breathable cover during first fermentation.

Adding the SCOBY to Warm Tea

The sweet tea must cool before the SCOBY and starter liquid are added. Hot or warm tea can stress the culture and weaken the batch before fermentation begins.

Overhandling the Batch

Moving the jar, opening it repeatedly, stirring it, or tasting too early introduces variables without improving the batch. Once the jar is set up, leave it alone until day 7 unless there is an obvious issue.

Confusing Yeast Strands With Mold

Brown threads in the liquid are yeast. Fuzzy surface growth is mold. These are not the same thing. If the difference is unclear, read White Stuff on Kombucha? before discarding a healthy batch.

Beginner Mistake Recovery Chart

Mistake	What Happens	Can You Save It?
Added SCOBY to warm tea	SCOBY may be stressed	Let it ferment longer and monitor. If no mold appears by days 3 to 4 and it smells acidic, it may still be fine.
Not enough starter liquid	pH may not drop fast enough	Watch closely for mold. If none appears and it smells acidic, continue and monitor.
Used flavored or herbal tea	SCOBY may weaken over time	One batch is likely fine. Switch to plain black tea for the next batch.
Forgot the sugar	Very little for the culture to ferment	Batch will not develop properly. Start fresh.
Fermented too cold	Slow or stalled fermentation	Move to a warmer spot. Give it more time. It will likely recover.
Let it go too sour	Very tart, close to vinegar	Use some as extra acidic starter liquid for the next batch, or use it in cooking as a vinegar substitute.
Sealed the jar during first fermentation	Pressure buildup and altered conditions	Open carefully. Switch to a breathable cover immediately. Monitor for off smells.
Used too loose a cloth cover	Fruit flies or debris may enter	Inspect carefully. If it looks clean and smells right, continue with a tighter cover.

First Batch Decision Tree

Not sure what is happening in the jar? Work through this.

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Do You Need to Test Kombucha pH?

pH testing is not required for most beginner batches. Properly brewed kombucha with enough starter liquid acidifies naturally, and smell, taste, and visible condition usually provide enough information for home brewing decisions.

pH strips can be useful for anxious beginners, slow batches, or troubleshooting. Finished kombucha often falls around pH 2.5 to 3.5. For safety and troubleshooting, a batch that remains above roughly pH 4.0 after extended fermentation deserves caution and investigation. Inexpensive pH strips from a homebrew shop are enough. A digital meter is not necessary for normal home brewing.

Old School Tip: Smell and taste are more useful than pH strips for most brewing decisions. pH testing can confirm acidity, but it cannot tell whether the flavor is where it should be.

What Happens After First Fermentation?

Once kombucha reaches the desired sweet tart balance, first fermentation is complete. At that point, the batch can be consumed flat, refrigerated, bottled for carbonation, flavored, or used to continue brewing.

Flat kombucha is a finished product. It can be poured into clean jars or bottles and refrigerated. Refrigeration slows fermentation and preserves the flavor for several weeks.

Bottling is used when carbonation is desired. Finished kombucha is transferred into bottles with a small amount of sugar, fruit, or juice, then sealed for a short second fermentation. The full process is covered in How to Bottle Kombucha the Right Way.

Flavoring usually happens during second fermentation. Fruit, juice, herbs, ginger, and other additions can be used in small amounts to create flavored kombucha and feed carbonation. For practical ratios and combinations, read How to Flavor Kombucha.

Carbonation depends on bottle seal, sugar, temperature, time, and active yeast. For troubleshooting fizz specifically, read How to Get Fizzy Kombucha Without Exploding Bottles.

Before doing any of that, reserve starter liquid. Set aside 2 cups of finished kombucha and store the SCOBY in it for the next batch.

What To Do If You Need To Pause Brewing

For a short break of up to 2 weeks, store the SCOBY in starter liquid at room temperature with a breathable cover. It will continue fermenting slowly and should be ready when brewing resumes.

For a longer break, the SCOBY and starter liquid can be moved to the refrigerator to slow microbial activity. Many brewers do this successfully for weeks or a few months, though some prefer to keep cultures active in a room temperature SCOBY hotel. Either approach works better than letting the SCOBY dry out.

The SCOBY must stay submerged in liquid. A dried out SCOBY is difficult to revive and may not be worth saving. For extended breaks, a dedicated SCOBY hotel with enough starter liquid is the better long term option.

Safety Questions Beginners Ask

Kombucha has been brewed safely at home for a long time. When made correctly, it becomes an acidic beverage that is inhospitable to many unwanted organisms. The main home brewing risk is mold, and mold is uncommon when enough strong starter liquid is used and the vessel is clean.

Mold appears as fuzzy or powdery surface growth, often green, black, blue, white, or pink. Brown strands in the liquid are yeast, not mold. Rotten or putrid smell is also a warning sign and should not be confused with normal tart, vinegary fermentation.

Take Heed: Fuzzy surface growth on the SCOBY or liquid is a discard situation. Do not taste the batch. Discard the liquid and SCOBY, sanitize the vessel, and begin again with fresh starter and a healthy culture.

Botulism is often mentioned in online fermentation discussions, but properly brewed kombucha does not create the conditions botulism prefers. Botulism requires a low-acid, oxygen-free environment. First fermentation kombucha is acidic and covered with breathable cloth, not sealed anaerobically. The full safety discussion is covered in Can You Get Botulism From Kombucha?.

Homemade kombucha is not alcohol free. Alcohol content is usually low in standard home brewing, but it varies with time, temperature, sugar, and culture balance. People who avoid alcohol completely should treat homemade kombucha with caution.

Pregnant people, immunocompromised people, and anyone managing medical conditions should consult a healthcare provider before drinking unpasteurized homemade ferments.

A trustworthy batch smells tart, vinegary, and fermented. A questionable batch smells rotten, putrid, or sharply wrong in a way that does not resemble normal fermentation. When mold or foul odor is present, discard.

First Batch Shopping List

Everything needed for one gallon of homemade kombucha. Screenshot or print this before shopping.

Essential

☐ 1 gallon wide mouth glass mason jar
☐ Plain black tea bags, unflavored
☐ Plain white cane sugar
☐ 2 cups starter liquid, raw unflavored kombucha from a friend or suitable store bought bottle
☐ 1 SCOBY
☐ Coffee filter or tightly woven cotton cloth
☐ 1 rubber band
☐ Long spoon for stirring

Only If Doing Second Fermentation

☐ Swing top or screw top glass bottles rated for carbonation
☐ Small funnel

Final Encouragement

Most first batches turn out well. Some finish a little sweeter because the batch was stopped early. Some become sharper than expected because the kitchen ran warm. Most are useful in the best way: drinkable, imperfect, and good enough to teach the brewer what the next batch should do.

A first batch establishes the baseline. It shows how temperature affects timing, how strong the tea should be, what a healthy SCOBY looks like in your kitchen, and how the flavor changes from sweet to tart. That experience matters more than chasing a perfect first result.

Once first fermentation is comfortable, the next steps are easier: second fermentation, flavoring, bottle carbonation, SCOBY storage, and continuous brewing. For the broader roadmap, read Complete Kombucha Guide for Beginners.

First Batch Kombucha Cheat Sheet

Old School Ferments — oldschoolferments.com

The Recipe: 1 Gallon

Ingredient	Amount
Filtered water	14 cups
Black tea bags	8 bags
Plain white cane sugar	1 cup
Starter liquid	2 cups
SCOBY	1 healthy SCOBY

The Steps

1. Brew
   Boil half the water. Dissolve sugar. Steep tea 5 to 10 minutes. Remove bags without squeezing.
2. Cool
   Add remaining cold water. Wait until tea is fully at room temperature. Do not rush this.
3. Combine
   Pour cooled tea into glass jar. Add starter liquid. Stir gently. Place SCOBY on top.
4. Cover
   Use a coffee filter or tightly woven cotton cloth. Secure with a rubber band. Never use a sealed lid.
5. Ferment
   Keep at 70°F to 78°F, away from direct sun. Leave it alone.
6. Taste
   Start tasting around day 7. Stop when the sweet tart balance suits you.
7. Save
   Reserve 2 cups finished kombucha as starter for the next batch. Keep the SCOBY with it.

Fermentation Timeline

Day	What To Do
Day 0	Set up and cover. Leave it.
Days 1 to 6	Do nothing. Do not open.
Days 7 to 10	Begin tasting.
Days 10 to 14	Decide when it is done.
Done	Reserve starter. Bottle or refrigerate.

Normal vs Problem

What You See	Normal?
SCOBY floating	✓ Yes
SCOBY sinking	✓ Yes
Brown stringy threads	✓ Yes, yeast strands
Cloudy liquid	✓ Yes
Thin film at surface	✓ Yes, new pellicle
Vinegar smell	✓ Yes
Fuzzy green, black, blue, white, or pink growth	✗ No, mold. Discard.
Rotten smell	✗ No, do not drink.

Decision Tree

Rotten smell? → Discard.
Fuzzy surface growth? → Mold. Discard everything.
Brown strings in liquid? → Normal yeast. Keep going.
Smells like vinegar? → Fermentation working. Keep going.
Still very sweet after 10 days? → Probably too cold. Move to warmer spot.
Tart and pleasant? → Done. Bottle or refrigerate.

Before You Start Checklist

☐ Plain black tea, unflavored
☐ Plain white cane sugar
☐ Filtered or spring water
☐ 2 cups starter liquid
☐ 1 SCOBY
☐ Clean 1 gallon glass jar
☐ Coffee filter or tightly woven cotton cloth
☐ Rubber band
☐ Warm spot, 70°F to 78°F

Shopping List

Essential

☐ 1 gallon wide mouth glass mason jar
☐ Plain black tea bags
☐ Plain white cane sugar
☐ Starter liquid, raw unflavored kombucha
☐ SCOBY
☐ Coffee filter or tightly woven cotton cloth
☐ Rubber band

For Second Fermentation Only

☐ Glass bottles rated for carbonation
☐ Small funnel

Key Rules

Never: Add SCOBY to warm tea.
Never: Use a sealed lid during first fermentation.
Never: Use flavored or herbal tea for the first batch.
Always: Use 2 cups starter liquid per gallon.
Always: Use plain white cane sugar.
Always: Use filtered or spring water.
Always: Save 2 cups of finished kombucha for the next batch.

Full guide at oldschoolferments.com. Print this. Tape it to the cabinet above your brewing jar.