Here Substitutes for Cornstarch
Wheat Flour. Wheat flour is made by granulating wheat into a fine powder.
Arrowroot. Arrowroot is a boring flour produced using the foundations of the Maranta variety of plants, which is found in the jungles.
Potato Starch. Potato starch is another substitute for cornstarch.
Custard.
Ground Flaxseeds.
Glucomannan.
Rice Flour.