Dried fruits of pepper plants are known as "peppercorns". There are black, white, green and red peppercorns depending on the harvesting stage and processing of the mature fruits. Most popular peppercorns are black peppercorns and white peppercorns. Black pepper contains about 3% essential oil, and white pepper contains 1.5%. In addition to these, dried green peppercorns and red peppercorns are also available in the market.