Made from cassava root, this finely milled starch is used as the basis for dumpling doughs and sweets and for dusting or coating foods before cooking. Also known as tapioca flour, it is also used as a thickener for sauces, giving them a slightly gelatinous quality and giving the foods they are served with a desirable gloss. The starch will keep in a tightly covered container in a cool cupboard for up to 1 year.
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