Autolyse technique developed by Raymond Calvel, France, 1970s; artisan sourdough revival in the United States from the 1990s; Chad Robertson (Tartine Bakery) popularised stretch-and-fold and cold retard from 2000s
Modern artisan bread baking uses three specific techniques in combination to develop gluten structure, improve extensibility, and produce complex flavour without intensive mechanical mixing: autolyse, stretch-and-fold, and long cold fermentation. Autolyse, developed by French bread scientist Raymond Calvel in the 1970s, involves mixing only flour and water (withholding salt, yeast, and levain) and resting for 20–60 minutes before adding remaining ingredients. During this rest, endogenous flour enzymes — proteases and amylases — begin softening gluten bonds and the flour fully hydrates, dramatically reducing the mixing time required to achieve a smooth, extensible dough and improving overall dough structure and extensibility. Salt is withheld because it tightens gluten prematurely; yeast is withheld to prevent fermentation beginning before the gluten is ready. Stretch-and-fold replaces intensive kneading in high-hydration doughs where traditional kneading would be impractical. During bulk fermentation, the dough is stretched upward and folded onto itself in four cardinal directions every 30–45 minutes for the first 2 hours. Each set of folds aligns gluten strands, builds dough strength, and redistributes fermentation gases. High-hydration doughs (75–85% water by flour weight) require this progressive structure-building approach. Long cold fermentation (retarding) slows yeast activity while allowing lactic acid bacteria to continue producing organic acids (lactic and acetic) that develop flavour complexity. A dough retarded in the refrigerator at 4°C overnight or for 8–16 hours develops significantly more flavour than one baked the same day. Cold retarding also tightens the dough structure, making final shaping easier and producing more defined scoring. These three techniques together produce an open, irregular crumb structure, a blistered, glossy crust, and complex flavour — the hallmarks of contemporary artisan sourdough.
Cold fermentation produces a nuanced, multilayered sourness — longer retards shift from lactic (mild, yoghurt-like) toward acetic (sharper, vinegar-like) acid character
Autolyse for 20–60 minutes with only flour and water — salt and leavening are added after to avoid premature gluten tightening Stretch-and-fold sets every 30–45 minutes during early bulk fermentation build strength progressively in wet doughs Bulk fermentation is complete when the dough has grown 50–75% and the surface shows doming and bubbles Cold retard at 4°C overnight develops flavour complexity through continued LAB acid production with minimal yeast activity Shaping technique determines final crumb structure — tight shaping creates surface tension that supports the loaf during baking Bake in a covered Dutch oven for the first 20–25 minutes to trap steam, enabling full oven spring before crust sets
Perform the windowpane test after bulk fermentation — a small piece of dough stretched to translucency without tearing indicates adequate gluten development For maximum crust blisters, spray the inside of the Dutch oven lid with water before baking — surface condensation produces characteristic blister texture Use a banneton (proofing basket) lined with rice flour for clean release — wheat flour sticks; rice flour does not Dust the shaped loaf with rice flour before retarding — the flour sets on the surface and creates a clean, dramatic canvas for scoring For consistent results, track dough temperature throughout — ambient and water temperature affect fermentation speed significantly
Including salt in the autolyse, which tightens gluten prematurely and negates the benefit of the rest period Over-fermenting during bulk, producing a slack, sticky dough with degraded gluten and a gummy, dense crumb Using too few stretch-and-fold sets with a high-hydration dough, resulting in insufficient gluten development and spreading in the oven Not preheating the Dutch oven — a cold vessel prevents the initial steam trap and produces a flat, pale loaf Scoring too shallow or not at all, causing the loaf to burst from weak points rather than expanding in a controlled, dramatic ear