instant tapioca

What Can You Substitute For Instant Tapioca? Cornstarch. Cornstarch makes a great replacement for tapioca flour and is easily accessible. … Cassava flour. … Potato starch. … All-purpose flour. … Arrowroot. … Rice flour. How much cornstarch do I substitute for tapioca? Summary: Tapioca is a processed starch flour made from the root vegetable cassava.