Arrowroot is a wonderful, clear thickener used in gravies, sauces and pie fillings. It is also more easily digested than other thickening agents.
Mix 1 rounded tablespoon arrowroot powder into just a little cool water. Add to 1 cup gravy, or other sauce. Stir constantly over high heat, about 10-15 minutes. Gravy will thicken suddenly. Once thickening occurs, STOP STIRRING so as not to break down the bonding and thin out the gravy.