Water Kefir
A lightly fizzy, tangy fermented drink made by fermenting sugar water with water kefir grains (a bacteria-yeast culture) for a few days. Unlike milk kefir, it contains no dairy.
What Is Water Kefir?
Water kefir is a fermented drink made by fermenting sugar water with “water kefir grains” (gelatinous clusters formed by bacteria and yeast cultures) at room temperature for a few days. Since it contains no milk, it is also an option for people sensitive to lactose.
During fermentation, some of the sugar is converted into organic acids and natural carbon dioxide, giving the drink a mildly fizzy, tangy character. It can be varied by adding fruit or spices.
Water Kefir Nutrition
Water kefir contains about 20 kcal per 100 ml; this value varies with fermentation time and the amount of sugar remaining. Its standout feature is not its calorie content but its live probiotic culture.
How Should Water Kefir Be Consumed?
As a low-calorie drink with live cultures, water kefir can be enjoyed cold in small glasses as part of a balanced diet.
This information is general; water kefir is a beverage, not a substitute for medical treatment.
How to Choose Water Kefir
When buying bottled water kefir, look for a simple ingredient list (water, sugar, and culture); for homemade kefir, choose fresh, active grains with a pleasant smell.
- Bottled products should have a simple ingredient list
- For homemade kefir, the grains should be active, translucent to whitish, and pleasant-smelling
- A slight pressure (carbonation) in a sealed bottle is normal
How to Store Water Kefir
Consume prepared water kefir within a few days when stored in a sealed bottle in the refrigerator; it becomes more sour if kept longer. Store the kefir grains separately, feeding them regularly with fresh sugar water.
How to Use Water Kefir in the Kitchen
Water kefir is most often consumed cold, mixed with fruit juice, or flavored and carbonated through a second fermentation; some recipes also use it as a liquid for fermenting dough.
How Is Water Kefir Different from Milk Kefir?
Milk kefir is fermented in cow’s or goat’s milk, while water kefir is fermented in sugar water; water kefir contains no lactose and has a lighter, fruitier taste. Both use different grains (clusters of cultures) that work in a similar way.
Frequently Asked Questions
Does water kefir contain alcohol?
Trace amounts of naturally produced alcohol can form during fermentation; in homemade water kefir, this amount is generally very low (below 1%), but it can increase with a longer second fermentation.
What is a second fermentation?
After the first fermentation, the grains are strained out; a second fermentation with fruit or spices increases flavor and carbonation. Follow a validated method, use a vented container, and refrigerate the finished kefir.
How do water kefir grains multiply?
The grains multiply over time when regularly fed fresh sugar water; excess grains can be set aside for another fermentation or shared.