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Oven spring is the burst of rise a loaf makes early in a hot oven, before the crust sets. Gas in the dough expands with the heat, water turns to steam, and the yeast makes a last push of gas until the dough gets too hot for it. A well-sprung loaf grows visibly taller and opens along its score.
For more oven spring: an active starter, dough proofed to ready (not over), a tight shape, a confident score, a very hot preheated pot or steel, and steam or a lid for the first 20 minutes.
In the first minutes the dough's gas bubbles expand as they warm, water in the dough turns to steam, and the yeast speeds up before heat stops it at around 140°F (60°C). The loaf rises as long as its skin stays soft. Once the crust dries and sets, the rise stops. That is why steam or a lid matters: it keeps the skin soft long enough for the loaf to finish rising. A covered Dutch oven traps the loaf's own steam.
Each one helps; the first three matter most. Most flat loaves are a fermentation problem, not an oven problem: see flat loaves.
The ear is the ridge of crust that lifts along a score made at a shallow angle (about 30°). As the loaf springs, one side of the cut peels back and bakes into a crisp lip. It is a sign of good spring, strength and scoring, not a goal in itself. See how to score for an ear.
Bakers use "oven spring" and "oven kick" for the same thing. "Bloom" usually means how the score opens. All three improve together when fermentation, shaping and heat are right.
Most often the dough was under- or over-fermented, the shape was loose, or the loaf lacked steam. Check fermentation first.
Yes: a preheated, covered pot gives strong heat from below and traps steam, so the crust stays soft while the loaf rises.
Until the crust sets. King Arthur takes the cover off at about 20 minutes, once the loaf has reached its full oven spring.
Keep what you own when it does the job. These are the other exact models we profile.
The lid also works as a handled pan, so one set fills more than one cooking role.
A quarter-inch carbon-steel surface for an oven with room for its full footprint.
One blade can be held straight or curved; a protective case is included.
