Citrus fruit, about the size of golf balls, and round. The fruits are pale yellow-green, the juice is yellow and very tart, more so than standard limes. Grow in Florida, the Keys and other tropical places in the Caribbean. Used in Key Lime Pie, with egg yolks and condensed milk and in a Sunset Key with amaretto.
An ovoid citrus fruit (Citrus aurantifolia) with a thin, green skin; smaller than a lemon, it has a juicy, pale green pulp and a very tart flavor.