About Arrowroot powder is extracted from the plant Arrowroot, a tuber that is used widely in traditional medicine for the treatment of diarrhea, urinary tract infections, and respiratory issues Storage information Store in a dry, cool place, away from direct sunlight. Some clumping is normal. Usage information Use two teaspoons of arrowroot powder and mix it with warm water, boil with half cup of milk, sweeten with your choice of sweetener and enjoy. Arrowroot powder can also be used as a substitute for cornstarch in soups. Ingredients Arrowroot Nutrition label