Now we know that mint contains antioxidants that can help prevent cancer, heart disease and other chronic diseases. The menthol found in mint is a natural ingredient used to treat emphysema, and menthol vapors help relieve congestion. Peppermint tea is a tonic for bad breath, earache, fever, gallstones, hives, heartburn and nausea. Don't try ingesting peppermint oil, however. It is highly toxic, even in very small amounts.
Spearmint offers many of the same health benefits but is used more often in cooking.
The sweet, sharp flavor of this mint is popular in sauces accompanying lamb, and the mint julep is a classic summer drink of the American South. Middle Eastern and Asian cuisines use mint more widely because it complements the pungent spices of Eastern dishes. Fresh mint is used whole, chopped or minced in cooking. It bruises easily and should be handled with care. Mint turns black when cooked with acidic foods, such as tomatoes.