Check out Healthy Food Guide’s recipe for how to make kombucha.
All you need is;
Blueberry kombucha, the new favourite. To make that, when you have finished your first ferment, remove SCOBY, add a handful of frozen blueberries and 1tbsp sugar/bottle….leave for 3-5 days in a sealed bottle (pop the top daily to avoid explosions!!) and voila, done. Remove the berries before drinking.
Healthy Food Guide