Hibiscus, called Chembaruthi in Kerala, is one of the most common flowers that is seen on home gardens across the state. The flower, it's buds and leaves are widely used in haircare routines. But did you know that hibiscus are great for your health too? They are rich with antioxidants and helps ease hypertension. Here is a super-easy and super-refreshing drink made with freshly-plucked hibiscus flowers.