Lime is a term referring to a number of different fruits (generally citruses), both species and hybrids, which have their origin in the Himalayan region of India, and which are typically round, green to yellow in color, 3â€“6 cm in diameter, generally containing sour and acidic pulp. They are frequently associated with the lemon. Limes are often used to accent the flavors of foods and beverages. They are usually smaller than lemons, and a good source of vitamin C. Limes are grown all year round and are usually sweeter than lemons. In cooking, lime is valued both for the acidity of its juice and the floral aroma of its zest. It is a very common ingredient in authentic Mexican, Southwestern United States and Thai dishes. It is also used for its pickling properties in ceviche. Additionally, the leaves of lime are used in southeast Asian cuisine. The use of dried limes (called black lime or loomi) as a flavouring is typical of Persian cuisine and Iraqi cuisine, as well as in Gulf-style baharat (a spice mixture that is also called kabsa or kebsa). Limes are also an essential element in Tamil cuisine. Lime leaves are also a herb in South, East, and particularly Southeast Asia. In Vietnam, people have boiled chicken with lime leaves and a mixture of salt, black pepper and lime juice.