Optional: Before marinating, cut the skin between the drumette and flat section down to the joint. This prevents the wing from curling up during frying and ensures even cooking. The glaze can be made up to 3 days ahead and stored in the refrigerator. Reheat gently before tossing with the wings. Potato starch gives a lighter, crispier coating than cornstarch or flour. It can be found in the Asian foods aisle of most grocery stores.