Red Tea Collection An infusion of bergamot orange, a fragrant citrus fruit native to southern Italy, gives this tea its distinctive flavor. This refreshing caffeine-free cup will uplift you throughout the day. The flavor of rooibos is more similar to black tea than any other herb tea. And like black tea, it goes through a fermentation process, which turns the leaves from green to a deep red color and gives it a slightly sweet note with a deep body. In Earl Greyer, rooibos is punctuated by the the pleasing taste of pure oil of bergamot. Gluten Free