Sago starch is a starch that is extracted from the sago palm. It is not as fine as cornstarch but is actually made up of tiny pearls. Sago starch is used in baking, and as a thickener for soups and puddings. The starch is also used in making some types of noodles.
Sago starch is available in Asian markets or you can find it online at KhanaPakana.com