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Coconut Water Kefir

Makes about 1 litre June 2026
Coconut water kefir in a large glass jar

Coconut water naturally provides the sugars needed for fermentation — no need to add any.

Coconut Water Kefir

Makes about 1 litre · Fermentation 24 to 48 hours

Ingredients

  • 1 litre pure coconut water, without preservatives
  • 3 tablespoons water kefir grains

For a second fermentation (optional)

  • Mango pieces
  • Pineapple
  • Mixed berries
  • A few slices of lime

Method

  1. Pour the coconut water into a large, clean glass jar.
  2. Add the kefir grains.
  3. Cover with a clean cloth held in place with an elastic band.
  4. Leave to ferment at room temperature for 24 to 48 hours.
  5. Strain to recover the grains.
  6. The drink can be consumed immediately or bottled.
  7. For a more fragrant version, add a few pieces of fruit before bottling, then leave to ferment for another 12 to 24 hours at room temperature before storing in the fridge.

Result

Unlike a classic water kefir made with sugar water, coconut water kefir already has a distinct flavour after the first fermentation. The coconut water naturally brings soft, fruity and slightly exotic notes. The resulting drink is generally less sharp and rounder than traditional kefir. Even without a second fermentation, it's already ready to drink.

Bottled coconut water kefir with tropical fruits
With a second fermentation using fruit — mango, pineapple or lime — the drink becomes even more fragrant and slightly sparkling.

A note on the grains

Coconut water naturally contains the sugars and minerals needed for fermentation. However, kefir grains seem to thrive better in a classic sugar-water preparation. After a round in coconut water, it's advisable to return the grains to a traditional preparation for 24 to 48 hours before using them again for another batch of coconut water kefir.

Important

Use only pure coconut water, without preservatives or additives. Preservatives can inhibit fermentation and prevent the grains from working properly.

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