โญ All-Purpose Flour with Cornstarch (Best Dairy-Free Option)
For every 1 cup cake flour, use 1 cup all-purpose flour minus 2 tablespoons, then add 2 tablespoons cornstarchCake flour has a lower protein content (about 7-8%) compared to all-purpose flour (10-12%), which results in less gluten formation and a softer crumb. Adding cornstarch dilutes the protein in all-purpose flour, mimicking cake flour's properties and yielding a tender doughnut.
To ensure success, sift the all-purpose flour and cornstarch together before measuring to distribute evenly. Avoid overmixing the dough to prevent gluten development.
The final doughnuts will be slightly less delicate than those made with pure cake flour but will maintain a soft, tender crumb and light texture suitable for classic doughnuts.