The dried and mature seeds are flat oval, slightly pointed at one end, yellowish-white in appearance, slightly edged, about 1.2 to 2 cm in length and 0.7 to 1.2 cm in width, with hairy surfaces and more edges. The seed coat is thick, and the hilum is located at the tip end; if the seed coat is removed, a green and thin endosperm can be seen with 2 thick yellow cotyledons inside. The cotyledon contains fatty oil and the radicle is small. The air is fragrant and the taste is slightly sweet. Dry, full-grained, yellowish-white shell is better.