Overnight sourdough bread

The overnight loaf answers the honest problem with sourdough: the good bread wants 9 hours of your attention and you have a job. This schedule moves the long, slow stage to the hours you are asleep, using less starter and cooler water so the dough peaks in the morning instead of at 2 am.

Why the numbers change overnight

Compared with a same-day country loaf, this formula drops the starter from 20 percent to 15 percent and starts with cool water. Both slow the ferment on purpose: bulk fermentation that takes 4-5 hours warm needs 10-12 hours at a cool 18-21C (65-70F). The fermentation calculator shows how strongly temperature bends the curve.

If your kitchen runs warm at night (above about 23C / 73F), cut the starter to 50 g, or the dough will be over the hill by morning. If it runs cold (below 17C / 63F), 100 g keeps things moving.

The morning read

The overnight dough tells you when it is ready. Look for a domed surface with scattered bubbles, edges pulling slightly from the bowl, and a wobble when you shake it. If it looks slack, sticky, and deflated, it went too far: shape it gently, proof it cold in the fridge, and expect a tangier, flatter (still delicious) loaf.

Fit it to your evening

Working backward: bread out of the oven at 8 am means shaping around 6 am, which means the mix goes together around 7:30 pm the night before. The bake schedule planner lays this out for any finish time and temperature, and in the Banneton app the same plan sets a timer for each stage so the morning runs itself.

If the evening mix does not suit your week, the same-day loaf and the rest of the sourdough bread recipes run on different clocks.