Mint and mint oils are a class of active ingredients derived from selected members of the plant genus Mentha. Primary sources include cornmint, peppermint, and spearmint. Active substances contained in the plants and essential oils in this class include menthol, carvone, and various other terpenoids. Peppermint and spearmint are commonly used food ingredients; cornmint is used as a food ingredient in some Asian cuisines and is a major source of food-grade menthol used as a flavoring agent. As a pesticide, mint and mint oils work primarily through non-toxic modes of action as repellants, but also have anti-microbial properties. Peppermint is covered in a separate profile.