Name: Fermented Grape Juice Water Kefir (Secondary Fermentation)
Prep time: 48 h 10 min
Total time: 48 h 10 min
Ingredients: about 4 cups fermented sugar water from primary fermentation; 2 cups organic grape juice

Beverage Fermentation

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Fermented Grape Juice Water Kefir (Secondary Fermentation)

This is the healthiest, most delicious sparkling grape juice recipe! For different varieties, try this water kefir recipe with red, purple, or white grape juice.

Prep: 10 minutes
Total Time: 48 hours 10 minutes

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Ingredients

about 4 cups fe rmented sugar water from primary fermentation
2 cups organic grape juice

Instructions

It is vital that you use carbonation-safe bottles for secondary fermentation. This recipe makes 6 cups, so I use three 16-ounce bottles. You can use fresh-pressed juice (see notes) or bottled pasteurized juice; both work great (ensure it’s 100% juice, no additives).
Fill a carbonation safe bottle about 60% to 75% full with fermented sugar water from primary fermentation.
Top off the bottle with the juice so there is about an inch of headspace left in the bottle.
Secure the bottle lid and gently invert it a couple times to mix.
Allow it to ferment at room temperature (70-80 degrees F) for about 24-48 hours.
Carefully open the lid to see if it is carbonated to your liking. If it is refrigerate, if not continue to ferment for 24 more hours, carefully checking the carbonation again.
Keep refrigerated.

Notes

If using fresh-pressed juice, I suggest heating it to 145° F for a few minutes and cooling it before using it. This ensures that no wild microbes get introduced into the water kefir.
The juice ratio is slightly adjustable. The best ratio for lower sugar is 3 parts fermented sugar water and 1 part juice. For slightly sweeter, as with this recipe, I do half fermented sugar water half juice.

Find it online: https://cultured.guru/blog/healthy-homemade-sparkling-grape-juice