Water Kefir Recipe

This water kefir recipe shows you how to make kefir at home with just water, sugar, and kefir grains, for a tangy, lightly fizzy drink you can flavor later.

Water kefir is a fermented drink made by feeding water kefir grains a simple sugar-water solution, which turns it tangy and lightly effervescent over one to two days. It’s a dairy-free way to make kefir at home, and once you have the grains, you can keep the cycle going with almost no equipment.

If you’ve ever wondered how to make kefir at home without milk, water kefir is one of the simplest starting points. You just need filtered water, a bit of sugar, and organic water kefir grains, and the grains do the actual work of fermenting the drink.

Why You’ll Love This Water Kefir Recipe

• Only three ingredients: water, sugar, and water kefir grains.
• The grains can be reused for batch after batch once you get into a rhythm.
• A short first ferment (24-48 hours) fits easily around a normal schedule.
• An optional second ferment lets you add fruit and herbs and build natural fizz.
• No special fermentation equipment is required beyond a jar and a cover.

What Ingredients Do You Need for Water Kefir?

Ingredient Group	Ingredient	Exact Amount	Purpose or Note
Base	Water	700 ml	Filtered if possible
Base	Light brown sugar or golden granulated sugar	20-25 g	Feeds the kefir grains during fermentation
Culture	Organic water kefir grains	25-30 g	Ferments the sugar water into water kefir

The sugar isn’t there to sweeten your finished drink. It’s food for the water kefir grains, and they consume most of it as they ferment, which is what turns plain sugar water into tangy kefir water.

Filtered water is worth using here because heavily chlorinated tap water can interfere with the bacteria and yeast in the grains. Using organic water kefir grains also matters, since that’s what starts and drives the whole fermentation.

How to Make Water Kefir Step by Step

First Ferment

1. Combine the water and sugar and stir until the sugar has completely dissolved.
2. Pour the sugared water into a Mason jar. Carefully place the grains into the sugar solution. Cover with a muslin or tea towel and secure it with a rubber band or string. Let it brew at room temperature for 24-48 hours, no longer, and keep the jar away from direct sunlight.
3. When the water kefir is done brewing, strain out the grains and keep about 25 ml of the liquid for the next batch. You can start the next batch right away with the grains, or make a SCOBY hotel in the fridge to store them until next time. To do this, stir a teaspoon of light brown sugar into 20 ml of water, add the grains, and cover with a lid.

Pro Tip: Keep the fermentation jar out of direct sunlight so the grains stay active and ferment consistently.

Second Ferment

1. If you like your kefir fizzy, return the strained kefir water to a clean, wide-mouth jar or bottle and add fruit and herbs of your choice. Close the lid tightly and let it ferment for another 24-36 hours at room temperature.
2. Once fermentation is finished and you see bubbles, transfer the kefir to lidded bottles and store them in the fridge. Enjoy over ice.

Pro Tip: A tight-fitting lid during the second ferment is what traps the carbon dioxide and gives your water kefir its fizz.

Expert Tips for Water Kefir

Pro Tips for Success

• Stick to the 24-48 hour window for the first ferment. Going longer starves the grains of sugar and can weaken them over time.
• Use a muslin cloth or tea towel, not a sealed lid, during the first ferment so the culture can breathe while it works.
• If you’re not brewing again right away, a SCOBY hotel keeps your grains fed and healthy in the fridge until your next batch.
• Reserving about 25 ml of finished kefir water for the next batch helps keep the culture strong and consistent from batch to batch.

Variations

Adding fruit and herbs during the second ferment is an optional way to flavor your water kefir, as described in the recipe instructions. The type and amount of fruit will affect both the flavor and how much fizz builds up, so it helps to keep an eye on the bottle during the 24-36 hour second ferment.

Troubleshooting Common Problems

Problem: The second ferment doesn’t produce much fizz.

Solution: Make sure the lid is on tightly during the second ferment, since a loose seal lets the carbon dioxide escape instead of building pressure.

Problem: You’re not sure the grains are still active.

Solution: Keep the first ferment within the 24-48 hour window and store the grains properly in a SCOBY hotel between batches, since inconsistent feeding is the main thing that weakens water kefir grains over time.

How to Store and Reheat Water Kefir

Storage Method	Duration	Best Practice
Refrigerator (bottled, after second ferment)	Not specified in this recipe	Store in lidded bottles in the fridge and serve chilled or over ice

Water kefir is a cold drink, so there’s no reheating step here. Just pull a bottle from the fridge and pour it over ice whenever you’re ready to drink it.

Because the second ferment builds carbon dioxide, bottled water kefir can be pressurized. Fermented-food safety guidance from the BC Centre for Disease Control covers this.

It notes that fermented kefir should be kept in acid-resistant, food-grade containers, since built-up pressure can cause the liquid to leak or the bottle to release forcefully when opened.

Frequently Asked Questions

Give This Water Kefir Recipe a Try

Once you’ve got a jar of grains going, this water kefir recipe is an easy one to fold into a weekly routine. Honestly, the hardest part is remembering to strain it on time.

If you make a batch, leave an honest comment or rating below and let others know how your second ferment turned out. And if you save this recipe to Pinterest, it’s an easy one to find again next time you’re ready to brew.

You might also like this spider web taco dip or this lemongrass risotto for your next kitchen project.

These maple-glazed pumpkin muffins are worth trying too.

Save this water kefir recipe for a tangy, lightly fizzy homemade drink made with just water, sugar, and grains. An easy probiotic ferment you can flavor with fruit for a second fizzy ferment.