Water Kefir Soda

September 4, 2019 (Last Updated: September 16, 2020)

Water kefir soda is a sweet and fizzy fermented drink that will give you a nice dose of beneficial bacteria and yeast. Like kombucha, to make water kefir, you need a SCOBY (symbiotic culture of bacteria and yeast). Water kefir requires a different kind of SCOBY commonly known as water kefir grains.

What are Water Kefir Grains

Water kefir grains are known by many names and come in a variety of species. Just to mention a few, they also go by ginger beer plant, beer seeds, eternity grains, and many others.

water kefir grains
Water Kefir Grains

Nobody knows where water kefir grains originated because they have been found in many different countries. One source is found growing on the prickly pear cactus or Opuntia in Mexico. They are sometimes used as a starter for a traditional Mexican drink called tepache.

Where Can I find Kefir Grains

If you know someone else who makes water kefir, ask them for some grains. They multiply each time you make water kefir with them, so I’m sure anyone would be happy to share some with you.

If you don’t happen to know anyone who has kefir grains, you can order them online or find them in most health food stores. You can buy live grains or in their dehydrated form.

How to Make Water Kefir Soda

Water kefir soda is very easy to make and requires very little time compared to making kombucha. In order to get started, you will need just a few items.

What You Will Need:

  • Glass quart jar
  • Coffee filter, cheesecloth, or clean dish towel
  • Mesh strainer or cheesecloth
  • Water kefir grains
  • Unchlorinated water
  • Sugar (preferably high nutrient, unrefined sugar) I like to use a combination of sucanant sugar and organic cane sugar.
  • Fruit of your choice (mangoes, blackberries, strawberries, etc.)

Start by combining 1/4 C sugar with water in a quart jar and stir until the sugar has dissolved.

I would like to note here that using more nutrient-dense sources of sugar are best for your kefir grains because they prefer a mineral-rich environment.

Add the kefir grains and allow them to sink to the bottom of the jar. During fermentation of your first batch, they will usually remain at the bottom. After a few batches, they will become acclimated to their new climate, and you will see them come to life. They become very active when they are happy!

Cover the top of your jar with a coffee filter, piece of cheesecloth. or a clean dish towel to keep critters out. Secure with a rubber band or string.

Allow your kefir water soda to ferment for about 48 hours at room temperature, out of direct sunlight.

After 48 hours, strain the kefir grains from the water and set them aside. Mix the kefir water with the fruit(s) of your choice and pour into a jar or swing-top bottles. Blackberries are great for this recipe!

Secure the lid and allow to ferment for another 24-48 hours.

Be sure to burp your containers at least once per day. Carbonation builds rapidly with water kefir soda. You don’t want any bottles exploding or gushing.

Use your grains to start a new batch, or store them. See below

I burp mine 2-3 times per day. I have experienced soda shooting all over my kitchen when opening a bottle after a mere 12 hours. If you are fermenting your soda in a very warm area, it’s a good idea to relieve the pressure frequently.

Once your soda has reached a sufficient level of carbonation, transfer it to the refrigerator, and enjoy it nice and cold.

How to Store Water Kefir Grains

If you choose not to start another batch right away, you can store your grains for later use.

Store them in the freezer or refrigerator with about 1 cup of water and a few tablespoons of sugar.

If storing in the refrigerator, you must feed your grains by adding a few tablespoons of sugar once per week. Let them go too long without feeding, and they will die. Also, be sure to change the water out once every two weeks.

You can also dehydrate your grains for storage.

So there you have it! Get ahold of some kefir grains so you can enjoy this refreshing probiotic drink for yourself.

If you found this post helpful, please like, share, and subscribe for future updates. Happy fermenting!

water kefir soda

Water Kefir

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By Curie Ganio
Prep Time: 10 min Cooking Time: 3-4 Days

Water kefir is a fermented drink made by using water kefir grains, water, sugar, and fruits. Water kefir contains many beneficial yeasts and bacteria and is a refreshing drink that you can customize to your taste.


  • 1 or more Tbsp of Water Kefir Grains
  • 3 C Unchlorinated Water
  • 1/4 C Sugar, Coconut Sugar, Pure Maple Syrup or Molasses
  • 1/2 C Fruit of Choice



Combine the sugar and water in a quart jar until completely dissolved.


Add the water kefir grains to the jar and cover the top with a clean dish towel, cheesecloth, or coffee filter secured with a rubber band.


Allow to ferment at room temperature out of direct sunlight for 48 hours.


Pour the water kefir through a strainer or cheesecloth into a clean jar or pitcher. Set the grains aside.


Smash or dice your fruit of choice and combine with the water kefir.


Pour into swing-top bottles or jar and secure the lid.


Allow to sit at room temperature for 24-48 hours.


This step will create carbonation so be sure to burp your container at least once per day. Pressure will build very quickly with water kefir, and bottles can explode if left too long.


When the water kefir has become carbonated and fizzy, transfer your bottles or jar to the refrigerator and serve when cold.


Use your kefir grains in a new batch of water kefir by repeating the steps again.


If you do not wish to make a new batch right away, store the grains in the refrigerator in an airtight container with some sugar water. Feed with sugar once weekly.


You can also store your grains in the freezer or dehydrate them for long term storage. Coconut water can be used in place of sugar water as well.

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