Cold retard

A cold retard is a slow, refrigerated proof done after shaping, typically lasting anywhere from a few hours to two or three days. Cold temperatures slow yeast activity dramatically while allowing enzymes and bacteria to keep working more gradually, which is why retarded dough develops noticeably more complex, tangy flavor than dough proofed only at room temperature.

Beyond flavor, a cold retard is genuinely practical: it lets a baker shape dough in the evening and bake fresh the next morning, and firmer, colder dough is also easier to score cleanly since it holds its shape better under the blade. Because fermentation continues, dough that goes into the fridge slightly under-proofed at room temperature often finishes at a good point by morning.

A banneton or proofing container that fits in the fridge, ideally with a cover to stop the dough surface from drying out, works well for this step. A common mistake is retarding dough that is already fully proofed at room temperature, which leads to over-fermentation and a flatter loaf. Baking directly from the fridge, without letting the dough come back to room temperature, generally gives the best oven spring and a cleaner score.