Roo·i·bos
/ˈrɔɪbbs/
noun
South Africa
A naturally caffeine-free herbal infusion from the “red bush” plant, with a sweet, woody, slightly vanilla note.
Rooibos comes from Aspalathus linearis, a shrub that grows almost exclusively in South Africa's Cederberg region. The needle-like leaves are oxidised (fermented) to develop the reddish colour and sweet, woody character most people know — an unoxidised version, called green rooibos, is lighter and grassier.
Because it contains no caffeine and very low tannins, rooibos is a common choice in the evening or for anyone avoiding caffeine, and it takes well to milk, honey, or a slice of citrus.