โญ Cornstarch (Best Dairy-Free Option)
1 tablespoon cornstarch per 1 tablespoon arrowroot powderCornstarch is a starch extracted from corn and has strong thickening properties similar to arrowroot. It gelatinizes at a slightly higher temperature and creates a smooth, glossy texture that is ideal for Teriyaki Sauce, which benefits from a shiny finish.
To use cornstarch effectively, mix it with cold water to create a slurry before adding it to the sauce to prevent clumping. Avoid prolonged boiling after adding cornstarch as it can break down and thin the sauce.
Compared to arrowroot, cornstarch might produce a slightly less translucent sauce but maintains the desired viscosity and mouthfeel, making it a reliable and accessible substitute.