Here is the recipe:
1 cup of frozen raspberries
1 cup of chopped apple
1 inch of fresh ginger
Filtered water
Pinch of sea salt
1/2 cup of whey or fermented pickle juice. If you cannot tolerate whey then use beetroot.
Place the fruit and ginger into a mason jar.
Add the filtered water to the shoulder of the jar.
Add the salt and whey/pickle juice.
Put the cap on the jar and leave it for two to three days.
When you see the bubbles at the top of the jar, you know it is fermenting.
After a few days you can strain out the fruit and add it to your yoghurt or enjoy it in a drink.
Make sure you store your Kvass in the fridge.
Finally…enjoy! It is delicious!