Red tea, or rooibos, is on the rise. This drink without theine, rich in anti-oxidants, is taking an increasingly important place in the “infusion” shelves of supermarkets. But do you really know what red tea is? WHAT IS ROOIBOS? Red tea does not come from the tea plant but from a small shrub that grows only in South Africa.  It is after fermentation that its leaves take on the brown-red hue to which it owes its name. It should not be confused either with hibiscus (also called karkadé or bissap), giving a dark pink drink, widely consumed in Africa. There is also “green…