Originated in India, green peppercorns have a pleasant delectable quality that has made this a sought after gourmet pepper. As a matter of fact, these green berries are simply unripened black peppercorns that typically come in brine or vinegar, tasting fresh and tart. It is worth noting that these peppercorns are high in iron, vitamin K, and antioxidants. Piperine, which is a chemical found in peppercorns, may actually have anti-cancer properties. Besides, the oil derived from Green peppercorns is used to treat rheumatism, chills, flu, colds, poor circulation, exhaustion and muscular aches.