Peppercorns come from the vine piper nigrum. It was one of the earliest articles of commerce between Asia and Europe and was often referred in history as “black gold”. The fruits of the vine start out dark green then turn yellow and finally bright red when fully ripe. Black peppercorns with their dark brown to black wrinkled skins are the dried green (unripe) fruit of piper nigrum plant. They have a pungent flavor with lingering heat.
Green peppercorns are the same as black peppercorns except they have been dipped in a brine solution or boiled so the skin does not turn black as it dries. The flavor is considered more herbal and less hot than black peppercorn.