[Foodie Friday Recipe] Blueberry Ginger Water Kefir

Rose S. | September 5, 2025 | Real Food Recipes, Eating for Gut Health

Support your gut health with this delicious & refreshing blueberry ginger water kefir beverage!

If you’re looking for a refreshing, gut-friendly drink that’s as fun to make as it is to sip, this Fizzy Blueberry Ginger Water Kefir recipe is a must-try! Bursting with bubbles, packed with probiotics, and lightly flavored with juicy blueberries and zesty ginger, it’s a natural alternative to sugary sodas.

The process is simple yet magical: kefir grains transform a sweet mixture into a lightly fermented, low-sugar base, and then a second fermentation brings out fruity, fizzy goodness.

The result? A homemade, nourishing beverage that supports digestion while satisfying your craving for something sparkly and delicious!

For more on making kefir, be sure to check out this post. (If you already have a batch of water kefir ready for flavoring, you can skip straight to Step 6 and just add the ingredients listed under Second Fermentation below.)

Fizzy Blueberry Ginger Water Kefir Recipe

Serves: 2
Prep Time: 10 Min.
Total Time: 48-96 Hours

Ingredients:

First Fermentation

2 ¾ cups room temperature water (spring or filtered)
¼ cup muscovado sugar (or turbinado cane sugar)
1 pinch baking soda (or other mineral source options here)
¼ cup water kefir grains

Second Fermentation

½ cup organic blueberries (fresh or frozen, mashed well)
2 tbsp pressed ginger juice (or freshly peeled and finely grated ginger)

Directions:

Prepare your water: In a 32-oz jar, mix the sugar, water, and mineral source and stir until fully dissolved. If using filtered water, see Chef’s Notes here for instructions.
In another 32-oz jar, add the kefir grains (and any juices that the grains are packed in). Then, fill the jar to just below the rim with your water-sugar-mineral solution. Stir gently with a non-metal spoon (exposing kefir grains to metal can damage the culture).
Cover the jar with a coffee filter, cheesecloth, or paper towel, and use a rubber band to seal it. Put the jar in a warm place (between 78 and 82° F). Make sure that the jar is in a place that gets light, but not direct sunlight. For example, you can place your kefir jar in a north-facing window or a well-lit countertop in an open kitchen. It is important that the grains get plenty of light and warmth, but no direct sunlight. Direct sunlight will harm your kefir grains and potentially cause them to die.
Allow the kefir to ferment for 48 hours. You may want to gently stir after 24 hours (with a non-metal spoon, but this isn’t required).
After 48 hours, strain your kefir grains out. Use a non-metal mesh strainer, and pour the water kefir into a glass or plastic container. Save the grains to use again later. Nothing gets discarded.
Prepare the water kefir for the second fermentation. Using 2 glass swing-top bottles, divide the mashed blueberries and pressed ginger juice and add to the bottom of the bottles. Using a non-metal funnel, slowly pour the fermented water kefir into the bottles and fill to where the body of the bottle meets the neck. Seal tightly and place in a warm place (ideally the same spot you did the first fermentation) to ferment for another 24–48 hours. During this time, the water kefir is going to become carbonated and saturated with berry flavor. Alternatively, you can do the second fermentation in a 32-oz mason jar with a plastic lid. Seal tightly, but not too tight. You want to avoid a pressure explosion when you go to open the jar after the second fermentation is complete.
Periodically check the second fermentation; you should see bubbles forming around the fruit pieces. The bubbling may be more vigorous in the first 24 hours, but will settle down after the first 24 hours. If using swing-top bottles, gently tilt the mixture back and forth once a day to ensure the fruit remains submerged. If using a mason jar, carefully open and press the fruit down with a non-metal spoon.
Once the second fermentation period is complete, place the kefir water in the refrigerator to chill. Since the water is teeming with live probiotic cultures at this point, it will continue to ferment. However, the cool temperatures slow the fermentation process, so keep it refrigerated.
When ready to enjoy, carefully open the water kefir container and divide between two large serving glasses or four small ones if you are sharing with friends!