There is nothing quite as refreshing as raspberry kefir soda, and making your own from scratch. This refreshing raspberry soda is one you will want to keep on hand. Perfect for the warm summer months or whenever you need a probiotic drink.

My recipe is so easy, fast, and a great recipe to follow. If you have some water kefir grains on hand or you want to give water kefir grains a go, this recipe is perfect for you. If you don’t have kefir grains, you can pick some up off of Etsy, just give it a search “water kefir grains” and then pick a vendor! I did this with my milk kefir grains and water kefir grains. Both are thriving!
I love being able to make a fizzy drink with organic ingredients right at home on my kitchen counter. The best part is, is I get to customize what goes into my water kefir soda. If you want to learn how to make your own water kefir culture, you can find my post dedicated to making it! The live cultures and beneficial bacteria are a great way to get your healthy probiotics in every day.
Benefits of drinking water kefir
When you drink water kefir cultures, they have so many health benefits such as these per DrAxe.com:
Improved immune system
Protection against certain types of cancer
Boosts gut health
Supports weight loss
Suitable for any diet
This recipe is for the second fermentation of your water kefir grains after they’ve gone through their initial fermentation process. After you’ve already strained your grains after letting them sit at room temperature for 48 hours (first ferment), then it is now time to second ferment your kefir grains with your infusion. (If you want to see how I do the whole process of the first fermentation, see here.)
How to make raspberry kefir soda
There are only two ingredients you will need:
First fermented water kefir
Fresh real raspberries
Organic cane sugar (optional for extra sweetness)
The tools you will need are:
Flip-top bottles
Funnel
Pestle – optional
Bowl for mashing

Now that you have everything ready, it’s time for the infusion for the second ferment. This is probably my most favorite way to make small batches of raspberry soda. To start, you will want to mash your whole raspberries into a pulp (if you’re using real fruit). Mash them with 1-2 tablespoons of cane sugar if you want added sweetener.

Then, mash just until there are no chunks in the raspberries anymore (the seeds are okay, you will strain these later). Then, funnel the soda into a pop-top jar that’s safe for fermenting. Fill the jar leaving about an inch or two of headspace so the water kefir & the wild yeasts will have plenty of room to breathe.


Allow to sit for 1-4 days, burping daily. If you do not burp your water kefir, there is the possibility of your jar exploding under pressure. Around day 2, you will want to strain out the raspberry pulp and toss that into your trash or compost. Pour the liquid back into the flip-top bottle for further fermenting if desired. If you like the taste of the drink around day 2, you will want to go ahead and place it in the fridge for a slower ferment.
Refrigerate and enjoy
So, that’s it! You can taste the raspberry kefir soda daily and see which day you prefer to drink your soda. I prefer mine around the 48-hour mark, after that, I am not the biggest fan. So, it’s all in personal preference.
If you have a hard time flipping the top off of the bottle, just use a towel to cover the bottle and use the towel as a help. I do this about every time, the towel also aids in case there is a mess.
Other options instead of whole raspberries

Also, if you have raspberry water in your fridge, you can use the raspberry water instead of the berries. You can add more sugar content to it for added sweetness.
Additionally, you can use raspberry fruit juice if you have that on hand. Just use about 1/3 cup of juice and fill the rest of the jar up with the kefir water.
So, there are so many more naturally fermented soda recipes and I will be adding more! You can read all about how to make your own milk kefir as well right here. I love adding different flavors to my water kefir in the second ferment. Stay tuned to see what other recipes I come up with.
Thanks for stoppin’ by y’all!
Related posts:
What is milk kefir and why you should make it
Fluffy milk kefir pancakes (from scratch recipe)
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