Why do pie crusts shrink?
That’s from reader Paul. It’s an often-asked question and one you can’t talk about enough, in my opinion. The one word answer to the question is: gluten. Gluten is a catch-all word for the various proteins found in flour. A great blessing to the bread baker, they’re frequently a curse for the pastry maker.
American bakers have a particular problem with gluten because the gluten found in American flour is very stretchy and elastic. Not so with most European gluten, which tends to be hard. That means Europeans have a much easier time with things like pie doughs, which don’t shrink up in the oven like American doughs do.
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