A deliciously sweet and tart flower that gives this tea its bright, red color. Refreshing and healthy. Scientific Research Council (SRC), located in Hope Gardens, St. Andrew, notes that hibiscus (sorrel) contains a wide range of vitamins and minerals including vitamin C, calcium, niacin, riboflavin and a group of compounds called flavanoids. Flavanoids give sorrel its deep red color and is also recognized as a powerful antioxidant that helps to rid the body of free radicals that can cause deadly diseases. In essence the flavanoids present in sorrel may be a useful deterrent against certain types of cancer and, in general, can help to enhance the body's immune system.