Limes are a small, round citrus that are green to yellow in color and are thought to have originated in Southeast Asia. Like lemons, limes made their way to America with Columbus during one of his early voyages. The nickname “limeys” made its way into the historical lexicon when the fruit was eaten by 19th century British sailors to fight scurvy. The citrus can be used for both its savory and sweet properties and is most popularly found in Mexican, Southwestern, Vietnamese, and Thai cuisine. Sour limes contain citric acid while the sweet varieties do not.