Limes are small, green citrus fruits known for their tangy flavor. They are often used in cooking and drinks, adding a refreshing zest to dishes like guacamole and beverages like margaritas. Limes are rich in vitamin C, which is important for a healthy immune system. These fruits grow on trees and are typically harvested when they are still green. There are different varieties of limes, such as Persian limes and Key limes, each with its unique taste and uses. Whether squeezed over fish or mixed into cocktails, limes are a versatile ingredient in many cuisines around the world.