I looooove my latest water kefir variation: a refreshing citrus kefir soda.
This reminds me of “Squirt”, which I used to love, only this one is a probiotic *healthy* beverage! 
Here's the whole kefir soda recipe I use, I also posted it below.
To make it into a citrus kefir soda, before the second ferment, I squeezed the juice of one lime, one lemon, and one orange into there (only because that's what I had in the fridge), and stirred.
Then I bottled it and let it set for about 20-22 hours this time. That's how long it took to get fizzy. Funny how the timing is always changing on that. I also added a little bit more sugar – normally I add juice at this step but wanted to try only real juice.
I used the lighter, more refined organic sugar for the first ferment this time. I'd read that this will make for a less bubbly brew, and I think that's why it took so much longer to get fizzy.
They sure tasted good tonight with our grassfed burgers for dinner!
What are your favorite kefir soda or kombucha variations?
Previous posts on homemade kefir soda pop (see the whole recipe below):
- 5 Reasons Why I Love Kefir Soda More than Kombucha Tea.
- How Much Alcohol is in Kefir Soda?
- Read about when I killed my kefir grains.
HOW TO MAKE HOMEMADE KEFIR SODA POP
The first thing you’ll need to do is get some kefir grains.- Also you may want to grab some flip-top/Grolsch-style bottles – perfect for bottling water kefir (soda) and kombucha. I got regular beer bottles from a local beer making store, but the flip tops would be nice so you could skip the capping step.
- Once you get your kefir grains, follow the directions for rehydrating, then strain the grains (in a non-metal strainer) and use them to make kefir water (kefir soda)…
To make kefir water: Dissolve 1/2 cup sugar in a little bit of very hot filtered water. I normally use the less refined sweeteners like organic palm sugar, but this time used a lighter colored organic sugar so the taste would come out lighter. I did notice it being less carbonated, though… Find the sugars I like here.- Add cool filtered water up to 2 quarts (1/2 of a 1 gallon jar). This will cool down your water to room temp – hot water will kill the grains. Add kefir grains, stir, and rubber band a cheesecloth over the top. Let sit on the counter for 24 hours to ferment (48 hours will result in less sugar). Make sure it’s away from any other ferments/cultures you may have going so they don’t mess each other up.
- Since reading this post from Julie about making sure your kefir soda has enough minerals, I’m going to start adding these to each batch: a small piece of egg shell, a small pinch of sea salt, and possibly also a small amount of organic molasses as directed in the post.
When ready to bottle (this is your “second ferment”), assemble your supplies:
- kefir water (after fermenting on the counter for 24-48 hours)
- funnel
- Citrus fruit mentioned above OR 1 quart of any 100% juice you prefer – I’ve been using a pomegranate juice to make a red pop – which adds antioxidants!
- Bottles, caps, and capping tool (unless you use the flip top bottles mentioned above).
- Big bowl & spoon
- Measuring cup or something similar to scoop and pour with.
The first thing you’ll need to do is get some 
To make kefir water: Dissolve 1/2 cup sugar in a little bit of very hot 
- Strain out the kefir grains in a non-metal strainer as you pour the kefir water into a big bowl – I also lay the cloth into the strainer to strain it even more and it'll catch the little black specks that are sometimes in the sugar. Use the kefir grains to make your next batch, or set them aside just until you’re done bottling this batch. (Make sure they’re in a safe place away from kids…trust me.)
- Here's where you add the juice from whatever citrus fruits you're using – organic is best as citrus is often on the dirty dozen list of produce with the most pesticides. Also add a little sugar to your own taste.
- Using a funnel, add the kefir soda up to just under the neck of the bottle and cap with your handy capping tool (very simple – see the other post for more details on capping). I get about 8 bottles from this batch.
- Leave the bottles on your counter for 18 hours or so to give it more carbonation, and then refrigerate – now you have cold soda pops on hand! (The first time I did this I left it for 24 hours and it got so fizzy that it squirted all over when we opened it. 18 hours is usually just right. I assume this will vary depending on the room temp, though.)
- Note: to store your grains between uses, just keep them in sugar water in the fridge with a cover. Then when you’re ready to make another batch, strain and start from the beginning.
Dawn Treader says
We too love kefir soda. I just use our well water and don’t bother with warm water when adding the sugar. After the first fermentation, I bottle up the liquid with some grape juice and some water and let that sit out for about 24 hours. If it is very warm in the house (no AC) it might take just 12 hours. Then put it in the fridge till chilled. The weather took a cooler turn recently and I had to put my grains and bottles over the big metal heater with the pilot light.
So far, I’ve not had a bottle explode in the 2 years I’ve been making kefir but I have sprayed the kitchen ceiling a couple times. Result: clean ceiling! 😉
I’m going to pick up some cherry juice and blueberry juice today for some variety from the grape juice.
Dawn Treader
Leah G says
We use flip top bottles too and I can tell the temps are changing. We came in last night to kefir everywhere. a liter bottler had exploded. kefir floor to ceiling and everywhere in between. glass all over. I couldn’t believe it. As for sugars we rotate them from time to time. Right now we are doing our secondary ferment with tart cherry juice.
Zoe says
I haven’t tried kefir soda yet but I make kombucha all the time. I am not very fastidious with my process at all and have never had mold issues- maybe because I’m in Australia and it usually ferments pretty quickly.
My favorite way to make kombucha is to bottle it, then add a few generous sprigs of mint to the bottle, screw the cap on and leave it for a few days. It’s delicious and refreshing
Brianna says
Elizabeth, the mold happens in the kombucha b/c it’s a tea based fermented drink, it’s much more delicate and susceptible to PH imbalances and therefore mold. It took me three tries to get my Kombucha right and two times I had nice green and white mold growing on top of the scoby! 😉 I always run my jars through the dishwasher, then RINSE it out with hot water right before I make a new batch, I boil all the water I need to make a new batch as well. The kefir actually is much hardier, and does better with tap water b/c it usually has at least some minerals in it. You also can alternate molasses batches with your kefir to add some minerals and strengthen your grains. To do this, add 1 tsp molasses to your sugar and warm water, add grains and ferment as usual. You can drink this, but my kids don’t particularly like it so I feed it to my chickens! 😉
Becky B says
I think there are special bottles you can buy to avoid breakage. See Nourishing Traditions for more info…
norma tumberg says
I love water kefir and have some brewing 90% of the time. I have found the coconut sap sugar makes my kefir grains go nuts!!! I have never seen such bubblies!!
I have not tried a second ferment, I like it with just the one ferment. I wonder if I did a second ferment if it would get super-duper bubbly!! H-m-m-m-m, something to think about.
Thanks Kelly. Yes, kefir does go so good w/ grass fed burgers!! Yummm. 🙂
Dori says
Oh my goodness, Kelly, what a timely post. I’m new in making water kefir. I left mine out to get fizzy. When I went to open it, I got a “fountain” of kefir pouring out and ran to the sink. It took me a while to notice I was bleeding and so had gotten blood, as well as kefir, all over the place. Turns out, the kefir literally blew the top off the bottle when I opened it, and I’d cut my hand on the broken glass. I’m kind of traumatized by the experience, so now I just put it in the fridge after I remove the grains. Be careful out there!
KitchenKop says
Youza! That’s the first time I’ve heard of a kefir soda injury!
Melanie says
My favorite: with ginger, please! A lot of ginger.
Elizabeth says
Kelly, do you think it’s safe for the water kefir grains to place them in water that has not be boiled and cooled. I’ve found that when I make kombucha my tea always molds when I place in water that only a portion has been boiled (for the tea to steep) with the remainder simply being filtered water. I was wondering if this would apply to water kefir as well. And I agree with another poster our favorite is adding bits of ginger for the second ferment. So delicious.
Peggy says
We love a good variety! I get whatever real, organic juice is on sale and will sometimes juice my own fruits to add. My favorite is plain, but the kids love grape and grape-pomegranate.
From time to time I’ll add chia seeds just before putting them in the fridge. That’s my youngest’s favorite kind!
Kimberly says
I used to dissolve the sugar in hot water, but now I just pour it into my two qts of cool water. No difference! I love fewer steps! I also add 10 drops of trace minerals from ConcenTrace since we have an RO filter on our water. I can’t wait to try this citrus version!
Heather says
Our favorite way to do water kefir is either ginger (chop up ginger root, put in bottle for second ferment) or ginger and cranberry. Even hubs, who is the soda drinker in the family, thinks ginger “healthy soda” is an acceptable substitute.