Letting yeasted dough rise, so that gas produced by fermentation inflates the gluten structure you built.
Technique at a glance
A compact visual model of the lesson. Use the full mechanism and success criteria below when you practice.
Concept
Letting yeasted dough rise, so that gas produced by fermentation inflates the gluten structure you built.
What changes
Yeast consumes sugars and produces carbon dioxide and ethanol.
What good looks like
The finger dent test is the reliable one. Press a floured finger about a centimetre in — if it springs back fully it needs longer, if it fills in slowly and leaves a soft mark it is ready, if it stays fully dented and…
Practice counts when you cook
Reading this brief does not change your School state. Finish a real practice dish in Cook mode and log the cook; that cook is the evidence that advances the skill.
What to focus on
Mechanism
Yeast consumes sugars and produces carbon dioxide and ethanol. The gas cannot escape a properly kneaded dough because the gluten network is elastic and gas-tight, so it inflates thousands of tiny pockets and the dough expands. Two things govern the rate: temperature and food. Yeast works fastest around 25-30°C and slows sharply when cold, which is what a refrigerated overnight rise exploits — the slow fermentation produces more flavour compounds relative to gas. Enriched doughs, with sugar, butter and egg, rise more slowly rather than faster: sugar competes with the yeast for water and fat coats the gluten, so expect close to double the time a lean dough takes. Over-proofing is a real failure and not just excess: the gluten stretches past what it can hold, and the structure collapses in the oven.
Success criteria
The finger dent test is the reliable one. Press a floured finger about a centimetre in — if it springs back fully it needs longer, if it fills in slowly and leaves a soft mark it is ready, if it stays fully dented and sighs it has gone too far.
Roughly doubled in volume, judged by eye against the container rather than by the clock.
The surface goes from matte and slack to domed and slightly taut.
It smells faintly of beer and bread rather than of raw flour.
Failure guards
The dough barely moved after hours.
Dead yeast, a cold room, or salt added directly onto the yeast before mixing. Yeast that has been killed by hot liquid — above about 50°C — never recovers.
It rose beautifully, then collapsed in the oven into a dense slab.
Over-proofed. The gluten was stretched past its limit and had nothing left to hold the oven spring.
Huge irregular holes and a pale, tight crumb underneath.
Under-proofed and under-developed. The gas concentrated in a few weak points rather than distributing through a fine network.