Lime is a term referring to a citrus fruit which is typically round, green in colour, 3–6 cm in diameter, and containing sour and acidic pulp. Limes are a good source of vitamin C, and are often used to accent the flavours of foods and beverages. They are grown all year round and are usually smaller and less sour than lemons. The lime is used for such culinary purposes as being diluted and sweetened and made into a drink, being used as a garnish for drinks, and used for flavoring for desserts, condiments, salad dressings, meats, and vegetables. The extracts and essential oils are used in cleaning products and perfumes, among other uses.