All-Purpose Flour with Cornstarch (Best Option)
1 cup all-purpose flour minus 2 tablespoons, plus 2 tablespoons cornstarchCake flour is low in protein (around 7-8%), which results in less gluten formation and a softer texture. By replacing 2 tablespoons of all-purpose flour with cornstarch, which contains no gluten, the protein content is effectively reduced, mimicking cake flour’s properties. This balance is crucial in a frittata to maintain a delicate yet cohesive structure.
When using this substitute, mix the all-purpose flour and cornstarch thoroughly before adding to the egg mixture to ensure even texture. Avoid overmixing to prevent gluten development, which can toughen the frittata.
Compared to using cake flour, this substitute yields a similarly tender and light frittata, with a slightly firmer bite but no significant difference in flavor or appearance.