Brewing Your Own Kombucha: A Guide to Growing a SCOBY

The first time I tasted kombucha, I wrinkled my nose. It was sour, slightly fizzy, and definitely… different. My friend practically had to force the glass into my hand, extolling the virtues of its gut-friendly probiotics and B vitamins. But something happened after that initial sip. The tanginess grew on me, the subtle sweetness peeked through, and I found myself craving that unique, slightly vinegary flavour. Now, years later, I’m a full-fledged kombucha enthusiast, and I’ve even taken the plunge into home brewing. There’s a special kind of satisfaction that comes from creating your own fizzy, fermented beverage, and it all starts with the SCOBY.

Recipe Overview: Cultivating Your Kombucha SCOBY

• Prep Time: 5 minutes
• Fermentation Time: 7-30 days
• Total Time: 7 days 5 minutes
• Yields: 1 SCOBY
• Serves: 1
• Dietary Type: Vegan

Ingredients for Your SCOBY

• 1 (8 ounce) bottle kombucha, unflavored, organic and raw, not pasteurized
• 1 cup black tea
• 1 tablespoon sugar

For Second Brew (after you have your SCOBY)

• ½ cup kombucha brew from growing the SCOBY
• ½ cup white sugar
• 4 cups black tea or 4 cups green tea, cooled

For Flavored Kombucha (After you have your SCOBY)

• 2 ½ ounces pure fruit juice, with no pulp

Equipment Needed

• Large glass jar (at least 1 quart)
• Towel or coffee filter
• Rubber band
• Food-grade glass containers

Instructions: Nurturing Your SCOBY

1. Begin by combining the kombucha from the bottle with the sweetened tea in your large glass jar. This creates the ideal environment for the SCOBY to thrive.

2. Cover the jar with a breathable material, such as a towel or coffee filter, and secure it with a rubber band. This allows air to circulate while preventing insects and other contaminants from entering your brew.

3. Place the jar in a dark, room-temperature area. A pantry or cupboard works well. Avoid placing it in the refrigerator, as the cold temperatures can hinder the growth of your SCOBY.

4. Allow the mixture to sit undisturbed for one week, or even longer. The SCOBY will begin to form on top of the liquid. At first, it will appear as a thin, translucent film.

5. Over time, the film will gradually thicken and become more opaque. This is a sign that your SCOBY is developing.

6. Once the SCOBY reaches a thickness of about ¼ inch, it is ready to use. You can allow it to grow thicker if desired, but it is not essential.

7. Carefully inspect the forming SCOBY for any signs of mold. If you notice any fuzzy, discolored patches resembling bread mold, discard the entire batch and start the process again. Mold indicates contamination, and it is not safe to consume.

8. Now that your SCOBY is ready, it’s time to start brewing kombucha! But before you start, wash your hands thoroughly. This is essential to prevent introducing unwanted bacteria or mold to your SCOBY.

9. To start a batch of kombucha, drain approximately 75% of the liquid from your SCOBY-growing jar into a separate food-grade glass container. This liquid, now rich in beneficial acids and yeast, is your starter tea.

10. In another food-grade glass container, combine 4 cups of cooled black or green tea with the 25% of the original liquid remaining in the SCOBY-growing jar.

11. Gently place your newly formed SCOBY on top of the tea mixture.

12. Cover the jar with a towel or coffee filter and secure it with a rubber band, just as you did when growing the SCOBY.

13. Allow the kombucha to ferment in a dark, room-temperature area for another week.

14. During this fermentation process, a new SCOBY will typically form on top of the original SCOBY. You can then peel off the new SCOBY and use it to start another batch of kombucha, or you can keep both SCOBYs in the same jar.

15. If you choose to share your SCOBY with a friend, be sure to include approximately ½ cup of the kombucha brew it came from, along with enough sugar and tea bags to get them started.

16. With the 75% of the liquid you set aside earlier, you can begin experimenting with flavored kombucha. Be mindful to drink no more than 4 oz. a day if you’re drinking it straight.

17. If you prefer a milder flavor, dilute the kombucha with tea or fruit juice. To make flavored kombucha, pour 2 ½ ounces of pure fruit juice (with no pulp) into a quart-sized food-grade glass jar.

18. Top the jar with kombucha brew, cover it, and allow it to “brew” for another 48 hours in a pantry or dark area.

19. After 48 hours, refrigerate the fruit juice kombucha and enjoy!

Expert Tips & Tricks for Kombucha Brewing

• Temperature is key: Aim for a consistent room temperature between 68-78°F (20-26°C) for optimal SCOBY growth and kombucha fermentation. Colder temperatures slow down the process, while warmer temperatures can lead to unwanted yeast activity.
• Use high-quality tea: Opt for organic, loose-leaf black or green tea for the best flavour and results. Avoid teas with added oils or flavorings, as they can harm the SCOBY.
• Be patient: SCOBY growth can take time, especially in cooler environments. Don’t be discouraged if you don’t see results immediately. Check on your SCOBY every few days and be patient.
• SCOBY Hotels: As you continue brewing kombucha, you’ll accumulate multiple SCOBYs. Store them in a “SCOBY hotel” – a jar filled with starter tea – in the refrigerator to keep them healthy and ready for future batches.
• Vinegar Wash: To help prevent mold, wipe the inside of your jar with white vinegar before using it for brewing.
• Don’t Disturb: Limit how much you move your SCOBY while it is brewing. Keep it in a cupboard, pantry or dark corner where it will have as little “interaction” with the outside world as possible.

Serving & Storage Suggestions

Your kombucha is best served chilled. You can enjoy it straight from the refrigerator, or pour it over ice. Garnish with fresh fruit, herbs, or a slice of citrus for an extra touch of flavour and visual appeal.

Store your kombucha in the refrigerator to slow down the fermentation process and prevent it from becoming overly sour. Properly stored kombucha can last for several weeks in the refrigerator.

Nutritional Information (Estimated)

Nutrient	Amount per Serving (4 oz)	% Daily Value*
Calories	~25 kcal	~1%
Total Fat	0g	0%
Saturated Fat	0g	0%
Cholesterol	0mg	0%
Sodium	~5mg	~0%
Total Carbohydrate	~6g	~2%
Dietary Fiber	0g	0%
Sugars	~5g	N/A
Protein	0g	0%
*Percent Daily Values are based on a 2,000 calorie diet. These values are estimates and may vary based on ingredients and brewing time.

Variations & Substitutions

• Different Teas: Experiment with different types of tea to create unique kombucha flavours. Oolong, white tea, and rooibos are all great options. Just be sure to use pure tea without any added oils or flavorings.
• Fruit Infusions: Add fresh or frozen fruit to your kombucha during the second fermentation for a burst of flavour. Berries, peaches, ginger, and citrus fruits are all popular choices.
• Herbal Combinations: Infuse your kombucha with herbs like lavender, rosemary, or mint for a refreshing and aromatic twist.
• Spiced Kombucha: Add spices like cinnamon, cloves, or ginger to your kombucha for a warm and comforting flavour, especially during the colder months.

FAQs (Frequently Asked Questions)

Q: How long does it take to grow a SCOBY?
A: It typically takes 1-4 weeks to grow a SCOBY, depending on the temperature and conditions. Be patient and check on it regularly.

Q: How do I know if my SCOBY is healthy?
A: A healthy SCOBY is usually smooth, opaque, and has a slightly vinegary smell. Discard it if you see any mold, discoloration, or unusual odors.

Q: Can I use honey instead of sugar?
A: While honey can be used, it is not recommended for first time brewers, and can often lead to a decline in your SCOBY’s health. Stick to granulated sugar for the best results.

Q: My kombucha is too sour. What can I do?
A: Shorter fermentation times will result in less sour kombucha. Taste-test your brew every day after the first week to find the perfect balance. You can also dilute the kombucha with water, tea, or fruit juice.

Q: Can I use flavored kombucha to start my SCOBY?
A: It’s best to use unflavored, raw kombucha to start your SCOBY, as added flavors or pasteurization can inhibit its growth.

Final Thoughts

Growing your own SCOBY and brewing kombucha is a rewarding and surprisingly simple process. It allows you to control the ingredients, experiment with flavours, and enjoy a naturally fizzy and probiotic-rich beverage. So, grab a jar, brew some tea, and embark on your kombucha-making journey! Don’t be afraid to experiment with different teas, fruits, and herbs to create your own signature kombucha blend. Share your creations with friends and family, and let them experience the deliciousness of homemade kombucha. Cheers to happy brewing!