All-Purpose Flour (Best Option)
1 tablespoon per 1 cup of creamAll-purpose flour contains moderate protein levels (around 10-12%) which helps to thicken and stabilize the custard without making it tough. The starches gelatinize during baking, contributing to the custard's body.
When using all-purpose flour, ensure it is well incorporated to avoid lumps. Slightly reduce baking time if the custard firms faster due to the different protein content.
The final texture will be slightly less chewy than with bread flour but still creamy and stable, making it a reliable substitute in crème brûlée.