The pepper (Piper nigrum) belongs to the family Piperaceae (thePepper family). It is an evergreen woody vine that is probably native to along the Malabar Coast in southernwest India. Nowadays, it is caltived in widely tropicas areas; Southeast Asia, South America and the West Indies. The stem is a trailing vine and entwines itself around adjascent trees, and it can reach 5-9 m long. The leaves are ovate and alternate. The flowers are pale yellowish white and bloom in the spikes. The fruits are berries and ripen red. The black pepper is produced from dried green, underripe fruits. The white pepper is produced from dried peeled, ripe fruits. The gray ground pepper which mixed both peppers, is a unique condiment in Japan.