All-Purpose Flour with Cornstarch (Best Option)
For every 1 cup cake flour, use 1 cup all-purpose flour minus 2 tablespoons, plus 2 tablespoons cornstarchCake flour has a lower protein content (about 7-8%) compared to all-purpose flour (10-12%). Cornstarch is added to all-purpose flour to dilute the protein and inhibit gluten formation, which helps achieve a tender crumb in waffles. This substitution balances structure and tenderness effectively.
To ensure success, sift the all-purpose flour and cornstarch together to evenly distribute the cornstarch. Avoid overmixing the batter to prevent gluten development which can toughen waffles.
Compared to cake flour, this substitute yields waffles with a slightly firmer texture but maintains the lightness and crisp edges expected in quality waffles.