This is probably the most commonly known alternate use for sugar out there. Keeping flowers in a vase of water provides the flowers with too little nutrition to sustain for a long period of time. Adding the vinegar prevents the bacteria to grow. Diamond Kalkandu: Mishri or rock sugar is crystallized sugar and has its origin in India. It is commonly offered to Hindu Gods especially Lord Krishna as it was his favorite sweet. As Mishra is an unrefined form of sugar it is known to be healthy as compared to table sugar. Mishri is widely used as a refreshing drink during summer.Mishri has been used in various Ayurvedic medicines and proved to be effective against cough. It clears cough and soothes the oral cavity. It also loosens up mucus and provides quick relief. Take a medium sized piece of mishri (rock sugar) and keep it in your mouth and swallow its juice (do not chew it)