Kalonji
Kalonji is the Hindi term for Nigella seeds. Kalonji refers to small black seeds grown on Kalonji bushes, which are grown widely through India. The plant may have originally been grown in Turkey and/or Italy, but according to herbal lore has been grown in India for several millennia. Kalonji is both flavoring, added to a variety of traditional foods, and an herbal remedy that has been touted as the magic bullet for a variety of ailments.
Kalonji or Nigella seeds are very small seeds which can also be bought in ground form. They are similar to wild onion seeds, but not related to onions. Kalonji have a light nutty taste, but bitter. They are used in dishes of fish, baked into Naan, or sprinkled over vegetables.
Kalonji seeds are about the same size as sesame seeds, though they have a more triangular instead of oval shape. In foods, Kalonji seeds are used in various recipes. They may be added to traditional Indian flatbread (Naan), any type of curry or stew, and to Dal. Lovers of these little black seeds praise their nutlike, somewhat peppery taste. To make this taste most evident, Kalonji may be prepared first by roasting in a pan without necessarily using oil because Kalonji has already a high oil content
Sometimes the seeds are used to make oil. Howeever, it is rare to find such oil outside of India or Arabic countries, but nowadays, it can be ordered online. It is normally used more though as an herbal remedy than as cooking oil, and may be present in a variety of lotions or ointments to treat skin conditions.