Flavor + Function: Bright and juicy - passion fruit and mandarin are full of plant-powered antioxidants and high-vibe flalvor. Feed your Microbiome: craft fermented from organic carrots then flavored with pressed fruits and roots, biotic kvass is a West Coast evolution of traditional beet kvass (kah-voss) from Eastern Europe. Bright, fresh and energetic, it delivers prebiotics, probiotics and postbiotics for a healthy gut, without the sugar or strong vinegar flavor of most kombuchas.