The mint powder is prepared from dried mint leaves. The mint leaf, fresh or dried, is the culinary source of mint. Dried mint powder is usually preferred as fresh mint has a short shelf life and is perishable. Mint powder is easy to store and can be added to any recipe of choice throughout the tear.Mint is a calming and soothing herb that has been used for thousands of years to aid with upset stomach or indigestion. Mint is thought to increase bile secretion and encourage bile flow, which helps to speed and ease digestion (and which may also support healthy cholesterol levels).