Week 5: The oven as the variable

Why a Neapolitan dough is the plainest thing you will mix all semester, and what 480 °C does in ninety seconds that 250 °C cannot do in ten minutes

22 March 2027

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Four weeks of making dough do more. This week it does less: 62% hydration, type 00 flour, no fat, no sugar, 0.1% instant yeast, and two days in which nobody touches it. Everything interesting has moved into the oven.

A formula built to be austere

Type 00 is defined by how finely it is milled, but the property that matters here comes from the wheat and the gentleness of the grind rather than from fineness — grind a hard wheat finer and you damage more starch, not less. Damaged starch is what amylase can reach, so a flour with little of it makes sugar slowly, and the dough comes out of 48 hours in the fridge with almost none left in reserve. Put a sweeter dough in a 480 °C oven and it darkens all over in the ninety seconds the rim needs to rise.

Hydration sits at 60 to 62% — low, after two weeks of wet dough. Lower hydration gives a dough stiff enough to leave a peel cleanly and a rim that holds its shape while it inflates. The salt runs high, 2.6 to 2.8%, partly for seasoning in a bread with nothing else in it and partly because salt slows the yeast, which over two days is the point.

Time replacing work

At 0.1% there is barely any yeast in the bowl, and most of two days goes on growing the population to the point where it can lift anything at all. Meanwhile the flour finishes hydrating, gluten links up without a mixer, and protease activity quietly relaxes the network. The dough that comes out of the fridge is extensible rather than springy, which is the only reason you can open it with your fingertips instead of a pin.

This is week 2’s poolish argument pushed to its limit: the same 0.1% yeast, but applied to the final dough instead of a preferment, and given two days instead of one night.

Ninety seconds

A 430 °C floor under 480 °C air cooks a base in 60 to 90 seconds. Speed is not showmanship. The crust sets and colours before the interior has time to dry, so the rim stays custardy inside a thin shell and the centre stays pliable enough to fold. Take the same base to six minutes at 250 °C and those extra five minutes of evaporation change the bread — crisp all the way through, which is worth eating but is not the same thing.

Browning at that speed splits into two reactions worth telling apart. Maillard from about 140 °C gives the gold ground. The leopard spots are pyrolysis: a gas bubble pushes the skin into the hottest air, its surface passes 300 °C, and it chars. Scattered spots are seasoning. A continuous black base is a burnt pizza, and the difference between the two is often just where the heat was.

Outline

Teaching team