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Free Guide · Dough

How to tell when bulk fermentation is done

The first rise, after mixing and before shaping, is where most sourdough goes right or wrong. The clock cannot tell you when it is done. The dough can.

Why the clock cannot tell you

Fermentation speed changes drastically with temperature, so a recipe's “4–6 hours” is only ever a suggestion. A warm kitchen can finish in a fraction of the time a cold one needs. The dough itself gives clearer answers.

Three signs to look for

  • Volume: grown noticeably, but not doubled. A straight-sided container with a marked starting level makes this easy to read.
  • Bubbles: scattered on the surface and visible at the sides of the container.
  • Jiggle: shake the container gently. The dough wobbles as one lively mass, like set jelly.
If you must err, err early. A slightly under-fermented loaf still springs in the oven and makes fine bread. An over-fermented one has spent its strength, and nothing in shaping or baking can bring it back.

The Advanced Kit includes a bake-day schedule planner built around exactly these signals: room temperature, dough temperature and timing.

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Frequently asked questions

How long does bulk fermentation take?

Usually several hours. It depends on the temperature, the amount of starter and the flour. Treat any time in a recipe as a guide.

Should my dough double during bulk fermentation?

For most sourdough doughs, it should grow noticeably but not double. Use the three signs together instead of one.

What if I let it go too long?

Shape and bake it right away. The loaf may turn out flatter, but it can still be good bread.

Haven't got a starter yet? Start with making one from scratch.

The guides teach the basics. The kits take you all the way.

Seven step-by-step modules from first mix to first loaf. The Starter Kit is where the craft begins.

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