Tangerines are a small, orange-colored citrus rich in vitamin C. They have been cultivated for over 3,000 in eastern Asia and the name is derived from Tangier, Morocco, the country form which the fruit was first imported to Europe. The tangerine is a variety of the Mandarin orange and is characterized by its sweeter taste and looser peel. Ripe tangerines are soft when gently squeezed and heavy for for their size. While often eaten whole or as a sweet addition to salads, tangerine juice and zest can also give an unexpected twist to savory meals. Tangerines stored in the refrigerator will stay good for seven days.