The best kombucha flavors for second fermentation are the simple ones: lemon and ginger, raspberry and ginger, pineapple and basil, blueberry, strawberry, mango, cinnamon apple, and turmeric. You pour finished kombucha into flip-top bottles, add the fruit, herbs or spices, seal, and leave them at room temperature for 3 to 10 days until fizzy. Cinnamon apple and turmeric are especially good once the weather turns cozy this fall.

Why You Will Love This

Second fermentation is where kombucha goes from pleasant to really good. You add fruit, herbs or spices to plain kombucha, let it ferment a few more days, and end up with a fizzy, layered drink that tastes nothing like vinegar. The flavors open up and the bubbles build. It holds its own next to anything in the health food aisle.

The Story Behind It

I started flavoring kombucha after my fifth batch of plain brew sat untouched in the fridge. It was perfectly good, just boring. Then I tossed in a handful of frozen raspberries. The second fermentation brought out flavors I hadn’t tasted before: tart fruit against earthy tea, natural sweetness, and bubbles that made each sip feel like a small celebration. Now I keep a rotation of flavored bottles going, each one a small experiment.

Glass bottles filled with colorful kombucha second fermentation flavors including ginger turmeric, raspberry hibiscus, and pineapple mint on wooden table with fresh fruits and herbs
A lineup of second fermentation kombuchas ready to carbonate, each with its own fruit and herb combination.

What You Will Need

Base Ingredients

  • 1/2 gallon (1.9 L) of your own first-fermentation kombucha for each flavor you make (homemade works best, and plain unflavored kombucha is the base)
  • Flip-top glass fermentation bottles

Flavor Combinations (amounts are for 1/2 gallon, or 8 cups, of kombucha)

Lemon Ginger

  • 1/4 cup lemon juice (about 2 lemons)
  • 1 tablespoon finely chopped or grated fresh ginger
  • 2 teaspoons honey (or white sugar)

Raspberry Ginger

  • 1 cup mashed raspberries, fresh or thawed from frozen
  • 1 thumb of fresh ginger, grated
  • 2 tablespoons lemon juice
  • 1 teaspoon honey

Pineapple Basil

  • 1/2 cup chopped pineapple (100 g)
  • 1/4 cup loosely packed fresh basil leaves (20 g)

Blueberry

  • 1/2 cup blueberries (100 g), fresh or frozen
  • 1/2 cup water
  • 1 tablespoon sugar
  • Optional: 1 teaspoon lemon zest or a small knob of fresh ginger

Strawberry

  • 1/2 cup halved strawberries

Mango

  • 1 ripe mango (about 2 cups frozen)

Cinnamon Apple

  • 1 apple, finely diced (or 1/4 cup apple juice or cider)
  • 2 cinnamon sticks, or 1/2 teaspoon ground cinnamon

Turmeric

  • 1/2 teaspoon ground turmeric (or 1 to 2 teaspoons freshly grated)
  • 1/4 teaspoon ground cinnamon (or 1 to 2 teaspoons freshly grated ginger)
  • 2 teaspoons honey

How to Make It

  1. Prepare the flavoring. Mash the raspberries into a chunky paste. Blend the pineapple with the basil until smooth, adding a splash of kombucha if the blender struggles. Blend the strawberries or mango until smooth. For blueberry, simmer the berries with the water and sugar (and the lemon zest or ginger, if using) until the berries burst, mash, and cool to room temperature.

  2. Bottle. Pour the kombucha into clean flip-top bottles, leaving 2 to 3 inches of headspace. The kombucha needs room to build fizz without pushing the cap off.

  3. Add the flavoring. Divide it evenly among the bottles. If you prefer, stir the blueberry, mango, or other purees into the kombucha in a bowl first, then pour. Seal tightly.

  4. Ferment. Keep the bottles in a dark spot at room temperature for 3 to 10 days. Warm rooms ferment faster and cool rooms take longer. You want fizz and flavor together.

  5. Check the pressure. For a first batch, fill one plastic bottle with plain kombucha, leaving the same headspace. When that bottle feels rock hard, the glass bottles are likely ready.

  6. Chill and serve. Refrigerate to slow things down. Strain out the fruit or herb bits if you like. Tightly sealed in the fridge, flavored kombucha keeps for several weeks.

Hands pouring plain kombucha over fresh ginger slices and lemon in swing-top glass bottle for second fermentation flavoring process
Adding ginger and lemon to plain kombucha for a second fermentation that builds both flavor and fizz.

Herbalist Notes

On ginger: Fresh ginger root does the heavy lifting in kombucha flavoring. It adds heat and lively fizz, so ginger kombucha tends to ferment faster than a fruit-only one.

On fruit choices: The best fruits for kombucha are naturally sweet and acidic. Berries, pineapple and mango work well because they give the yeast sugars to eat (that’s what makes the fizz) and bright flavors that stand up to kombucha’s tang.

On timing: Most flavors land between 3 and 10 days at room temperature. Warm spots speed this up and cold rooms slow it down. Taste along the way. When the fruit flavor is clear and the fizz is lively, it’s ready.

On herbs: Fresh basil adds depth without sweetness. Blending it with the pineapple spreads the flavor evenly through the bottle.

Make It Your Own

How do you add flavor to homemade kombucha? The method is the same whatever you add: put the flavorings in the bottles, pour kombucha over them, seal, ferment, chill. Swap strawberries and mango one for one, or try the strawberry basil combination from our spring drinks. Fresh turmeric goes well with ginger and honey, and the cinnamon apple bottle is the one to bring to a fall gathering.

For less fizz, refrigerate sooner. Bottles can build serious pressure, so use flip-top bottles made for it and open them slowly over the sink.

Colorful array of finished kombucha bottles with fruit and herb flavors chilling in refrigerator ready to drink
Finished second fermentation kombuchas chilled and ready to enjoy, each bottle a unique flavor experiment.