A Decaffeinated, Sweetish FlavorRooibos tea was obtained from the Aspalathus linearis plant called 'Red bush' native to South Africa. The red bush is from the legume family and is among the most popular teas consumed in South Africa. Tea that is red when brewed must be oxidized, and there is also a richer green version, which is mineral, if not as a flavor. Red Rooibos tea is sweet, and green Rooibos tea is simpler to taste. Rooibos tea, which is relatively rich in antioxidants, has no caffeine and its grain rate is very low.