How much all purpose flour would you use to equal three fourths cup of cake flour?

You can't directly substitute all-purpose flour for cake flour in a 1:1 ratio. Cake flour has a lower protein content, resulting in a lighter, more tender texture. Here's how to get close:

To substitute 3/4 cup cake flour:

* Use 1 cup all-purpose flour:

* Remove 2 tablespoons of the all-purpose flour:

* Add 2 tablespoons cornstarch to the remaining flour:

Explanation: The cornstarch helps mimic the low protein content of cake flour. This will give you a closer approximation of the texture you'd get with cake flour.

Note: This is a rough guideline, and the exact amount might vary slightly depending on the brand of flour you're using.