Limes are a popular citrus fruit that is a smaller round fruit colored green and turn yellow with time. Limes are typically used when green. The skin is used for zest while the pulp is sour and acidic, used for the juice often times. Lime is common in Mexican, Vietnamese, and Thai cuisine. Dried limes are used in Middle Eastern cuisine to flavor the food. In India, pickled limes are very common being sweet or salted. The leaves of a lime tree are used to flavor tea which can be delicious. Slices of lime are also perfect with a shot of tequila!