Blueberry Rooibos ("roy-boss") is an extremely popular variety. Dried blueberries reveal their natural sweetness as the tea steeps which is further enhanced by the Rooibos itself. It is also delicious as an iced tea. South African research on the tea has concluded that seven ounces of rooibos contains the following: Iron, Potassium, Calcium, Copper, Zinc, Magnesium, Fluoride, Manganese and Sodium. It is also renowned for its soothing effect on headaches, disturbed sleeping patterns and digestive problems. The dried blueberries only add to the anti-oxidant powers of Rooibos.