Coriander seeds are almost spherical, one end being slightly pointed, the other slightly flattened. There are many longitudinal ridges. The length of the seed is 3 to 5 mm. The seed is generally sold dried and in this state is apt to split into halves to reveal two partially hollow hemispheres and occasionally some internal powdery matter. Coriander is available both whole and ground. Coriander is a popular ingredient for garam masala, pickling spices and pudding spices.