The botanical name of Nigella Seeds is Nigella Sativa and belongs to the family of Buttercups. In India it is mainly cultivated in West Bengal, Punjab, Jharkhand, Himachal Pradesh, Bihar and Assam. Nigella is basically known as preservative spice, hence most of the pickles have it in them. It not only preserves food but also gives a amazing and unique taste to the curries, vegetables and savoury pastries as well. It is also used on baked products like different type of breads. It is also sprinkled on dough while making Naan and Parathas. According to Ayurveda Nigella has lot of health benefits. It is said that kali kalonji seeds can cure any ailment. It is very good for Stomach, Brain, Diabetes and Liver.