Loaf 11: the cold night

This is Loaf 11 of 16, and the one thing that changed from Loaf 10 is technique: the shaped loaf proofs in the fridge instead of on the counter, and you bake it the next day.

The formula is identical to Loaf 10, gram for gram. Printed below regardless, because the table not changing is the evidence that only one thing changed.

The frozen four: 400 g flour, 8 g salt (2%), one 9 x 5 inch (23 x 13 cm) loaf pan, 375°F / 190°C.

The formula, unchanged from Loaf 10

Frozen: 400 g flour · 8 g salt (2%) · 9 × 5 in pan · 375°F / 190°C · Hydration: 70% (280 g water on 400 g flour)

The method

1. Mix and fold as Loaf 10. Bulk to the gate at 75°F / 24°C.
2. Shape and put it in the pan.
3. Cover the pan and put it in the fridge, 38 to 40°F / 3 to 4°C, for 12 to 16 hours.
4. Next day, heat the oven to 375°F / 190°C and bake the loaf straight from the fridge, 45 to 50 minutes. No warming up on the counter.
5. Cool 2 hours at room temperature.

Note step 4. Every instinct says to let a cold loaf come up to room temperature first. Do not. A cold, firm loaf holds its shape while the oven's heat hits it, and the 45 to 50 minutes at 375°F / 190°C already accounts for the cold start, which is why it is longer than Loaf 10's 40 to 45 minutes at the same setting.

Why this works

Cold does not stop fermentation. It changes which parts of it keep running.

Yeast activity falls off a cliff as the dough chills. At 38 to 40°F / 3 to 4°C the yeast is barely making gas at all, which is why a loaf can sit in the fridge for 16 hours without blowing itself apart. The enzymes in the flour and the bacteria in the dough slow down too, but much less. So for a whole night, the loaf keeps breaking starch down into sugars and keeps producing acids and aromatic compounds, while almost stopping the one process that inflates it.

You are buying flavour without buying rise. That is the trade, and it is the single best deal in bread.

Three things you get for it. Taste, because the acids and the leftover sugars are what a long ferment tastes like. Crust colour, because those leftover sugars brown in the oven and Loaf 10's dough had already eaten most of its own. And a schedule, because the loaf now waits for you. A dough on the counter at 75°F / 24°C has a window of about an hour before it overproofs. A dough in the fridge at 38 to 40°F / 3 to 4°C has a window of many hours, so you bake when you want to, not when it demands.

That last one is not a minor convenience. It is the reason people who bake once a month become people who bake every week.

How you know it's ready

Straight out of the fridge, the loaf has risen to about ¾ inch / 2 cm below the rim of the pan, and a floured fingertip leaves a dent that fills back over a couple of seconds.

That is the gate. 12 to 16 hours at 38 to 40°F / 3 to 4°C is what it usually takes, and if your fridge runs cold or your kitchen ran cool during bulk, it will take longer. If the loaf is still low and dense after 16 hours at 38°F / 3°C, leave it at room temperature until it reaches the mark, then bake. The mark is the instruction. The night is context.

Bake until the centre reads 205 to 210°F / 96 to 99°C.

What goes wrong

The failure mode this loaf introduces: a dense loaf with a tight, pale crumb. It looks like the loaf never fermented, and in a sense it never finished.

One cause: the loaf went into the fridge before the bulk was done. People start trusting the fridge to fix things, and it does not work that way. The fridge preserves progress, it does not create it. A dough that was 20 minutes short of the bulk gate at 75°F / 24°C will still be 20 minutes short in the morning, because at 38°F / 3°C almost nothing happened to close that gap.

The fix has no nuance in it: pass the bulk gate first, always, on the counter, before the pan goes anywhere near the fridge. Risen by half to three quarters, domed, jiggly, bubbles at the glass. Then chill.

When it worked

Better crust colour than Loaf 10, a deeper and more even brown from the sugars the long cold left behind. A faint tang that was not there yesterday. A crumb a shade more open.

And it came out of your oven at a time you chose.

That last sentence is the real content of this loaf. Nine loaves taught you to read a dough. This one hands you control of the clock, which is the thing that makes bread fit into a life instead of taking one over. It is also the last loaf with commercial yeast in it, so bake it well and remember what it tastes like. You will want that baseline when the starter arrives at Loaf 12.

If you want to try scoring, steam or a Dutch oven, do it now, from this loaf, before Loaf 12. That is the optional branch, and none of it is required to finish the course.

Bake it twice successfully before moving on, because one good loaf is luck and two is a skill.