Rooibos tea is also known as red tea or red bush tea. It is made using leaves from a shrub called Aspalathus linearis, usually grown on the western coast of South Africa. Naturally caffeine free and can be enjoyed hot or cold.For the perfect iced tea place one heaped teaspoon in a glass of water leave in the refrigerator overnight. Strain leaves add ice and enjoy. Can be left in the refrigerator for up to a week.