This is how water kefir grains make probiotic soda ✨ With just 3 ingredients: water kefir grains, sugar, and water, you can make a bubbly, gut-friendly soda in any flavor you like. The science is simple but magical: 1. Yeasts in the grains feed on sugar, producing natural carbonation (CO₂) and a touch of alcohol. 2. Lactic acid bacteria create lactic acid, giving that tangy, refreshing flavor and acting as a natural preservative. Let the water kefir base ferment for 1–2 days, then seal it in a p