Bring one cup of water to a boil.

Add 1/2 cup organic brown sugar and stir until dissolved. Allow to cool completely.

Add 1/2 cup water kefir grains to a half gallon jar.

Fill the jar almost to the top with filtered water.

After the sugar water has dissolved  and COOLED completely, add into the jar with the rest of the water and the water kefir grains.

Place the lid on loosely and allow to ferment for 24 to 48 hours.

Use a small fine mesh strainer like this one or a thin tea towel to strain the kefir grains from the fermented liquid.

Second Fermentation For Water Kefir Soda (Optional)Grab a flip-top lid jar. Add 1/4 cup of grape juice to each bottle.

You could also experiment with other juice flavors to change it up a bit.

Fill each bottle the rest of the way with strained water kefir, using a funnel like this one or a thin tea towel

Close the flip top lid and allow to sit out for 24 more hours.

After it has been sitting for 24 hours, pop the lid. If there is hardly a “pop” sound at all when opening the lid, your soda probably isn’t fermented enough.

Close the cap and set it back out on the counter for another day. Now it should be ready.