Knock Back

Knock back is a bread-making term for gently deflating fermented dough after its first rise, usually by pressing, folding or turning it before dividing or shaping. It releases some accumulated gas and redistributes the dough so it can be handled and shaped more evenly. The term is also known as punching down or degassing, although the amount of gas released depends on the bread style.

When bakers knock back dough

Knocking back is commonly performed after bulk fermentation and before dividing, pre-shaping or final shaping. It can help even out large gas pockets and make the dough easier to portion. Some breads benefit from a more thorough deflation, while artisan doughs intended for an open crumb are handled more gently.

How to knock back dough

1. Turn the fermented dough onto a lightly floured or clean work surface, as appropriate for the recipe.
2. Press or fold it gently to release only the amount of gas required.
3. Divide and pre-shape the dough if the recipe calls for it.
4. Allow the dough to rest before final shaping when needed.

Knocking back versus folding

Knocking back generally refers to deflating dough after fermentation. Folding is often used during bulk fermentation to strengthen and organize the dough while retaining much of its gas. The methods overlap, but they are not always interchangeable.

Chef’s tip: Avoid aggressively punching down every dough. Use the handling method that suits the desired crumb: sandwich loaves may tolerate more deflation, while high-hydration artisan breads often need gentle folds and shaping.

Related term: Degassing dough.

Key distinction: Knock back describes a controlled handling step after fermentation; it does not stop yeast activity or permanently remove all gas.