I am making my way through the freezer - it needs to be defrosted. So I am using up all of last years harvest which includes a huge stash of blackberries. This simple fermented soda can be made with any fruit, fresh or frozen. The measurements in this recipe do not have to be exact.
- About 6 cups of Blackberries
- About 1 cup Honey or Sugar
- About 2 tablespoon of Sauerkraut Culture (or another like whey from strained yogurt)
1. Put blackberries in a pot and cover with water (I use about 1 & 1/2 liters). Simmer for about 30 minutes. Take off heat & add honey/sugar then leave it sit until cool.
2. Strain out blackberries. Dilute this syrup with more water (measure according to the flavor strength of your preference). I added about an extra 1 liter.
3. Add your culture then pour into a sterilized demijohn and fit an airlock.
4. Leave it sit for around 3 days. During which it will ferment and bubble away.
5. Move soda into plastic screw top bottles (if using glass be mindful that they can explode with the pressure if left long enough!). Store in the fridge. They will be ready in around 3 - 4 weeks. It will get fizzier and more dry the longer you leave it. But don't leave it too long otherwise you will loose half the soda in frothy overflow when opening it up.