Nigella sativa seed is variously called fennel flower, nutmeg flower, Roman coriander, blackseed, black caraway, or black onion seed. Other names used, sometimes misleadingly, are onion seed and black sesame, both of which are similar-looking but unrelated. The seeds are frequently referred to as black cumin (as in Bengalikalo jira), but this is also used for a different spice, Bunium persicum. The scientific name is a derivative of Latin niger “black”.Nigella sativa has a pungent bitter taste and a faint smell of strawberries. It is used primarily in candies and liquors.