Arrowroot powder is a popular culinary ingredient & store cupboard item used for making biscuits, puddings, jellies, cakes & pastries & for thickening sauces, soups & gravies. It is fat & sugar free starch-based thickener that can be used as a thickening agent for sauces, Asian stir-fry sauces, soups & gravies. Arrowroot is perfect for use in glazes as it thickens but remains transparent.
It thickens at much lower temperatures than those needed by cornflour & has a better flavour, but it is not a good thickener for use with dairy products, mix first with cool liquid such as water before introducing to hot liquids & stir constantly until well blended. Remove from heat as soon as the desired constituency is achieved, over heating will cause the arrowroot to break down & result in a runny sauce. For 1 tablespoon of cornflour in a recipe you can replace it with 2 teaspoons of arrowroot.