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Book 9, Question 51

Why Do Bakers Let Dough ‘Proof’ Before Baking?

Bakers let dough proof before baking because yeast needs time to make gas and flavor! The dough stretches and fills with bubbles as it rests and rises. Proofing is the dough's rest-and-rise time.

More fun facts

Sources: Exploratorium, Scientific American, BBC

Questions kids ask

What makes the dough get bigger?

Yeast gives off carbon dioxide gas, and the stretchy dough traps the bubbles.