⭐ Cornstarch (Best Gluten-Free Option)
1 tablespoon cornstarch per 2 tablespoons all-purpose flourCornstarch is a pure starch that gelatinizes quickly when heated with liquid, providing a strong thickening effect without adding flavor or cloudiness. This makes it ideal for sauces like teriyaki where clarity and gloss are important.
To use cornstarch effectively, dissolve it in a small amount of cold water before adding to the sauce to prevent clumping. Heat gently until the sauce thickens and becomes glossy.
Compared to all-purpose flour, cornstarch yields a more transparent and shiny sauce with a slightly lighter mouthfeel, which is often preferred in teriyaki sauce.