Coriander Seeds, which are actually the dried fruit of the coriander plant, is used as a spice. Typically used ground, coriander seed has a spicy, citrus flavor. Coriander seed is used extensively in Indian, Middle Eastern and Asian cuisines. Whole coriander seed is sometimes used in pickling and brining. Coriander is an ayurvedic medicinal herb, which is widely used as a flavoring agent for its unique smell and flavour. It is used as an essential ingredient in the curries and other delicacies.