Catch Coriander powder is very much needed and it also acts as a thickening agent. It is an essential ingredient of many curries and gravies as it has a mild aroma instigating the appetite. Coriander has a flavour which combines lemon and sage, with a sweet-note as undertone. Its seeds are an excellent source of minerals like iron, copper, calcium, potassium, manganese, zinc and magnesium. coriander is also rich in dietary fiber.