Ajwain Seeds
Ajwain is mostly sold in seed form since it is rarely if ever used as a powder in Indian cooking. If you ever require the powdered form, it is advisable to buy the seeds and grind them at home as required.
In Indian cooking, Ajwain is often part of the tadka in a dish. Tadka, or tempering, is a cooking method in which oil or butter (most often ghee) is heated until very hot and whole spices are added and fried, creating what is called a chaunk. It is used in small quantities and almost always used cooked. This is because of its strong, dominant flavor. This oil and spice mixture is then incorporated into lentil dishes, or added as a final touch or garnish to a dish.