Coriander is a pleasantly sweet spice with a lemony top note. It is commonly used in chili and curry dishes. The coriander plant produces both a spice and an herb. The leaf is know as cilantro and when the plant goes to seed, we harvest the coriander seed. Coriander is used in many types of ethnic cooking, such as Latino, Middle Eastern, and Indian. In this country, it is also used to flavor cookies, pastries, breads, sausages and corned beef.