For an extra layer of flavor, try adding a sprinkle of toasted sesame seeds or a drizzle of high-quality olive oil. If you don't have a clementine on hand, feel free to substitute with an equal amount of orange or lemon juice. The salad is best enjoyed immediately, but can be prepared a few hours in advance and stored in the refrigerator. Add the dressing just before serving to prevent the cucumber from becoming soggy.