Clementines are a diminutive orange citrus fruit, likely a cross of a mandarin and an orange, with a thin skin that peels off easily. Inside their segmented flesh is juicy and sweet flesh that's just a little more acidic than that of oranges.
Try using tangerines instead.
You'll find clementines from October through February. Choose fruits that are intact and firm, heavy for their size, and deeply colored. No need to avoid fruits that have a slight green cast—they'll color quickly.
Stored at room temperature with good air circulation, clementines keep several days to a week. Turning them and, even more important, keeping a little space between fruits, helps prevent mold from setting in. For longer keeping, stash them in the crisper drawer of the refrigerator.