You can use all-purpose flour as a 1:1 substitute for bread flour and vice-versa. For example, for 1 cup of bread flour, you ...
For every 1 cup (120g) unbleached cake flour called for in a recipe: Whisk together 3/4 cup + 2 tablespoons (105g) all-purpose flour and 2 tablespoons (14g) cornstarch. "The cornstarch adds ...