Using Potato Starch Instead of Cornstarch
Ratio
1:1
Good — works well with minor differences
Recipe Adjustment Notes
Thickens at a lower temperature and gives a clear, glossy finish. Add near the end of cooking — prolonged boiling thins it out.
The Science Behind This Swap
Large starch granules gel quickly but rupture under extended heat, releasing the liquid they trapped.
Measurement Variance Note
For 1 cup references, this ingredient can vary by about 6% across brands and measuring methods (120g-136g per cup). For the most reliable substitution result, measure by weight and test a half batch first.
How Potato Starch Compares for Cornstarch
Quality rating: good. Thickens at a lower temperature and gives a clear, glossy finish. Add near the end of cooking — prolonged boiling thins it out.