Clementines. Cara Cara oranges. Ruby red grapefruit. Blood oranges. Meyer lemons. A nonstop parade of in-season citrus is on call to brighten your winter doldrums. But satsumas are standouts. Don’t judge the irresistible mandarin by its bumpy, loose skin. For starters, satsumas are a snap to peel. And the insides are either seedless or close to it.