Rich in antioxidants and naturally caffeine-free, rooibos is a good alternative to green, oolong or black tea. Also known as Red Bush, rooibos is native to South Africa. The flavor of rooibos is smooth, naturally sweet, earthy and slightly nutty. Rooibos can be enjoyed hot or iced on its own or with added milk and sweeteners, making it a versatile beverage for any time of year.