Besides packing fresh or packaged mandarin oranges in a lunch box, try adding slices to Greek yogurt or oatmeal for a refreshing and nutritious breakfast. Known for their small size and easy-to-peel ...

“Citrus is competitive,” says citrus breeder and geneticist Fred Gmitter, explaining how global researchers race to develop, say, mandarin oranges that are sweeter, seedless, and easier to peel.

They have thicker, tougher-to-peel skin and a flavor slightly more on the tart side. Clementines, on the other hand, are the smallest among mandarin oranges and have a very sweet taste. You can easily ...