Always use filtered or spring water; chlorine can harm kefir grains. Avoid metal utensils with the grains. Adjust fermentation times based on room temperature and desired sweetness/tanginess. For active carbonation in the second ferment, use airtight flip-top bottles and 'burp' them daily. Store finished kefir soda in the refrigerator to slow down fermentation.
Keyword water kefir, homemade soda, probiotic drink, gut health, natural fermentation, healthy beverage, fizzy drink, cultured drink