Making healthy probiotic sodas using a ginger bug! This is a fun, rewarding, and surprisingly easy process once you understand the basics.
I. What is a ginger bug?
A ginger bug is a SCOBY (Symbiotic Culture of Bacteria and Yeast) that ferments ginger and sugar water, creating a naturally carbonated and probiotic-rich base for sodas. It’s similar to a sourdough starter but uses ginger instead of flour.
II. Creating your ginger bug
This takes about 5-7 days. Be patient! The process is more about consistency than strict precision.
Ingredients:
4-6 tbsp grated (or finely chopped) fresh, unpeeled ginger (organic is ideal)
4-6 tbsp organic cane sugar (or other natural sugar like coconut sugar – molasses and honey are not recommended at this stage)
Filtered, chlorine-free water (spring water works great)
Equipment:
A clean, wide-mouthed glass jar (quart size is good)
A breathable cover (cheesecloth secured with a rubber band, or a coffee filter)
A clean spoon (wood or plastic is fine)
Instructions:
Day 1: In your glass jar, combine 2 tablespoons grated ginger, 2 tablespoons sugar, and 2 cups of water. Stir well until the sugar dissolves.
Cover: Cover the jar with your breathable cloth and secure it.
Location: Place the jar in a warm (68-78°F / 20-25°C), dark place, away from direct sunlight. A kitchen counter or cupboard works well.
Daily feeding: Every day (for 5-7 days, or until your bug is active), add 1 tablespoon grated ginger and 1 tablespoon sugar to the jar. Stir well.
Observe: Watch for signs of activity. You should start to see small bubbles forming, the liquid may become cloudy, and it will likely have a slightly yeasty, ginger aroma. This indicates that the bacteria and yeast are multiplying.
Is it ready? The ginger bug is ready when it is bubbly, foamy on the surface, and smells pleasantly gingery and yeasty. It should be noticeably active.
Troubleshooting:
No activity? Be patient! Temperature is crucial. If your kitchen is cool, the process might take longer. You can try moving it to a slightly warmer spot. Ensure your ginger is fresh and potent.
Mold? If you see any mould (fuzzy, coloured patches), discard the entire batch and start over with a clean jar and fresh ingredients.
Smells rotten? A funky smell is normal, but a foul, rotten smell is a bad sign. Again, discard and start over. Ensure you are using clean equipment and fresh ginger.
III. Making probiotic soda
Once your ginger bug is active, you can start making soda. Here’s the basic process:
Ingredients (for one small batch – adjust as needed):
- 1/4 to 1/2 cup active ginger bug liquid (strain this off the solids)
- 1/4 cup organic cane sugar (adjust to your desired sweetness)
- 4 cups (approximately) of filtered water
- About 1/2 cup fruit juice or pureed fruit (berries, lemons, limes, etc.) Optional, for flavour.
Equipment:
- A large glass jar (at least 1/2 gallon)
- Bottles with tight-fitting lids (swing-top bottles or plastic soda bottles work well. Do not use thin glass bottles as they can explode from the pressure.)
- A funnel (optional, but helpful)
Instructions:
First Fermentation (F1):
- In your large glass jar, combine the water, sugar, strained ginger bug liquid, and fruit juice/puree (if using). Stir well to dissolve the sugar.
- Cover the jar with a breathable cloth and secure it.
- Let this mixture ferment at room temperature (68-78°F / 20-25°C) for 1-3 days, or until it’s reached your desired level of sweetness and slight tartness. Taste test it daily! The longer it ferments, the less sweet it will become, and the more carbonated.
- Tips for F1:
- Using fruit will add flavour, nutrients, and potentially more sugar for the bug to consume.
- Lemon or lime juice can help prevent unwanted bacteria from taking hold.
- Check your mixture for carbonation.
Second Fermentation (F2) & bottling:
- Once the first fermentation is to your liking, strain out any solids.
- Using a funnel, carefully pour the fermented liquid into your bottles, leaving about 1-2 inches of headspace at the top.
- Flavouring at this stage is possible, but the addition of fruit juice or sugar increases explosion risk.
- Seal the bottles tightly.
- Let the bottles sit at room temperature for 1-3 days for the second fermentation. This is where the carbonation builds. Important: Burp the bottles daily by briefly opening them to release excess pressure. This prevents explosions!
- Check your bottles regularly. As pressure builds they will become firm to the touch.
- If using plastic bottles, burp the bottle when it becomes rock solid.
Refrigeration & enjoying:
- Once the soda has reached your desired level of carbonation, refrigerate the bottles to slow down the fermentation process and stop carbonation.
- Refrigerating is crucial to prevent over-carbonation and explosions.
- Chill thoroughly before opening.
- Open carefully, as the soda may be very fizzy.
IV. Maintaining your ginger bug
Feeding: After using some of your bug to make soda, you need to “feed” it again to keep it healthy. Simply add 1-2 tablespoons each of ginger and sugar to the remaining bug in the jar, along with some fresh water (enough to bring it back to its original volume).
Resting: If you’re not planning to make soda for a while, you can slow down the bug by refrigerating it. Feed it well before refrigerating, and then feed it again once a week while it’s in the fridge. Bring it back to room temperature and feed it a few times before using it again.
Splitting: If your bug grows too large, you can split it into two jars. This is a great way to have a backup or to experiment with different flavours.
Long-term storage: You can dry a small amount of your active ginger bug on parchment paper and store it in an airtight container in a cool, dark place. To reactivate, simply rehydrate it with water and feed it as usual. This is a good way to preserve your bug in case something goes wrong.
V. Flavour ideas
Fruity: Strawberry, raspberry, blueberry, peach, mango, pineapple
Citrus: Lemon, lime, orange, grapefruit
Herbal: Mint, rosemary, basil, lavender (use sparingly!)
Spiced: Cinnamon, cloves, cardamom (use sparingly!)
Rooty: Beet, carrot (use sparingly!)
Tropical: Passionfruit, guava
Combinations: Strawberry-basil, Lemon-ginger, Raspberry-mint, Peach-rosemary

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