Also known as black cumin, nigella or by its scientific name Nigella sativa, kalonji belongs to the buttercup family of flowering plants. It grows up to 12 inches (30 cm) tall and produces a fruit with seeds that are used as a flavorful spice in many cuisines.
 
Kalonji is a plant from which the seeds have been traditionally used for the treatment of diabetes, pain, and digestive tract problems, among other diseases and conditions. It may be effective for weight loss when combined with a low calorie diet.
 
These tasty seeds can be used for flavoring curries and lentil dishes, as well as cooked with root vegetable dishes and stir-fries. Another way to use nigella seeds is sprinkled over naan bread before baking.