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Any Berry Water Kefir

Berries make delicious flavorings for water kefir. Sweet June strawberries give water kefir a bright red sweetness; raspberries lend their tangy, rich, jam-like flavor; blueberries create a subtly sweet purple-hued fizzy beverage; and cranberries are just delightfully red and tangy.

Use any of these berries, on their own or in combination, to create bright summer berry-flavored water kefir. They can be added fresh throughout the summer, or frozen or dehydrated for the winter months.


  • 3-4 very ripe blueberries
  • 3-4 very ripe raspberries
  • 3-4 very ripe blackberries
  • 2-3 strawberries, hulls removed, thinly sliced
  • Juice of ½ a small lime
  • 3 cups water kefir, fermented 24 hours


  1. Remove water kefir grains from water kefir.
  2. Transfer water kefir to a quart-sized airtight bottle or two pint-sized airtight bottles. 
  3. Smash berries together until juicy. 
  4. Pour in lime juice and stir to combine.
  5. Use a funnel to pour the smashed berry mixture into the bottle of water kefir, using the stem of a wooden spoon to force the berries through the funnel and into the bottle. 
  6. Lock the cap of the bottle down and invert it once to get the berries and their juice mixed in to the kefir. Ferment on the counter for at least 6 hours, or up to 12 hours, for more carbonation. 
  7. Open the bottle over the sink and enjoy.

Ready for More Cultured Berry Beverages?


Top view of a glass of berry-flavored soda

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