Those of you that know me, know that my favorite citrus fruit of all time is grapefruit. I also think that grapefruit paired with rosemary in a fermented beverage is the BEST combination! This Kombucha recipe is for a second fermentation flavoring and carbonation. It’s the step that follows primary kombucha fermentation in order to add bubbles and delicious flavor to your fermented drink! I know you’re going to enjoy this rosemary and grapefruit kombucha.