We have plenty of sweet and sour mandarinquats now. They are a cross between a mandarin and a kumquat with an edible peel that is slightly sweet. Like the kumquat, the peel must be eaten with the fruit to balance the super tart interior of the fruit. Mandarinquats can be made into marmalade, preserved whole, eaten fresh and sliced for addition to green or fruit salads. In addition, they can be sliced and cooked with pork roast or chicken.