Retarding

Retarding is cold Fermentation: the dough goes into the refrigerator so yeast and bacteria work slowly instead of on a warm bench. It is a schedule tool and a flavor tool, not a different chemistry. Calvel treats fermentation temperature as a condition to manage ¹.

Chilling changes the rate; it does not erase the dough's history. Dough that enters the refrigerator already advanced will still have less strength available when it comes back out. Read the surface, volume, and feel at the start and end of the hold, then adjust the next stage around those signals ¹.

King Arthur Baking describes two home patterns.

One of the two rises, not both. Most formulas have a first rise (Bulk fermentation) and a Final proof. In lieu of a typical 1- to 3-hour room-temperature rise, they use an 8- to 12-hour refrigerator rise, sometimes as long as about 16 hours depending on the formula — watching for overproofing. Their practical rule: chill one rise; leave the other at room temperature. Yeast asked to do both in the fridge has little left ². Bulk in the fridge if today is busy and tomorrow is open; shape-and-chill if tomorrow's bake window is short.

Shaped loaf overnight. For a naturally leavened loaf, they refrigerate the shaped dough immediately for a tangier bread. The dough rises slowly overnight or up to about 24 hours; 16 to 18 hours is their preferred window. Longer is not better in their account: off flavors and diminished dough strength ³. A room-temperature basket proof of about 2 to 3 hours is the milder-flavor alternative, and it demands closer watching.

What to notice #

Cover so the skin does not dry. A well-floured cloth in a basket helps a chilled loaf release. The dough should still feel alive at bake, not slack and sour-sharp past usefulness. This is not a food-safety hold; it is quality control. Pair it with Desired dough temperature and Fermentation scheduling rather than a kitchen timer.