Karuppu kavuni rice (black rice) commonly known by the name Emperor's rice. It is also known as purple rice or Forbidden rice. The reason why this type of rice is called by royal terms is that, it enriches the health and ensures the longevity.
It is used to prepare varieties of desserts during ancient times. Earlier in those days, one has to get consent from the royals to consume it, as it is believed that it cures almost all the body related problems.
The black colour pigmentation is due to the presence of anthocyanin in it, which is normally present in blueberries and blackberries. It has a nutty flavour.
Many recipes are made using black rice.
Most popular among them is Dosa, Puttu, Pudding with Coconut & Mango, Risotto, plain rice with various curries and others.