In its powdered form it is most popular in Asian cuisine. Coriander powder is made by grinding seeds to create this fine coriander powder. It’s a little known fact that coriander powder is key ingredient of curry powder. Coriander is one of the world’s oldest spices and is now native to many countries in the world. It is widely used in south Indian preparations, especially rasam, kara kuzhambu, vegetable preparations, etc.