Kala Namak RiceTraditional Kaala Namak rice is also recognized as "Buddha Rice" as it was found to have been cultured around the time of Gautam Buddha, about 600 BCE. It is one of the best small grain rice with an unusual black hollow shell. It is also recognized as Buddha Rice. According to reports, this rice has risen since the Buddhist period and is native to Uttar Pradesh. It was also included in the Food and Agriculture Organisation of the United Nations book