For mealy pie dough, the fat is blended into the flour more thoroughly, until the mixture looks like coarse cornmeal. Because the flour is more completely coated with fat:
- The crust is very short and tender because less gluten can develop.
- Less water is needed in the mix because the flour won’t absorb as much as in flaky dough.
- The baked dough is less likely to absorb moisture from the filling and become soggy.
Mealy dough is used for bottom crusts in baked fruit pies and soft or custard-type pies because it resists sogginess. Flaky doughs are used for top crusts and for prebaked pie shells.