Rock sugar, which is commonly called mishri, is an unrefined form of sugar. It is used in culinary and medicinal purposes and is made from crystallized and flavoured sugar. Rock sugar is less sweeter than refined sugar, which is a tasty variation compared to traditional white sugar. Mishri, or rock sugar, is made from the solution of sugarcane and the sap of the palm tree. This palm sugar, which is found in the form of mishri, is loaded with a number of nutrients.