Use kefir with confidence
Water kefir
Learn how sugar, water minerals, temperature, fruit, and bottling shape this lightly fermented drink.
What water kefir is
Water kefir grains ferment sugar water. They are different from milk kefir grains and are not interchangeable.
First fermentation
Sugar feeds the culture. Water quality and minerals affect how steadily the grains work.
Carbonation safely
A sealed second fermentation builds pressure. Use suitable bottles, leave headspace, and chill before opening.