Wintergreen (Gaultheria procumbens), also known as Checkerberry and Eastern Teaberry, is an aromatic, evergreen plant that creeps along the ground. Its single, white flowers develop into bright red berries which deer and grouse consume with relish. Not surprisingly, these berries taste like oil of wintergreen. The active ingredient in this oil is synthesized and used as a flavoring in chewing gum, toothpaste, breath fresheners, candy, and medicines, including Pepto Bismol. This same ingredient, methyl salicate, is related to aspirin, which explains why Native Americans chewed and made a tea from the leaves and berries of winterberry to alleviate pain.