Four chemical processes, four temperature zones.
The dial sets air temperature. The reaction happens at the food's surface or interior, usually lower than the dial.
Oven dial setting, approximate
Chuck, brisket, and pork shoulder are tough from collagen, a connective tissue protein. It only converts to tender gelatin over hours, roughly 160 to 205°F1, which is what low heat is buying: time, before the muscle fibers themselves dry out. Braising liquid caps at 212°F, under the Maillard threshold, so most braises get a separate sear first.
Pot roast, braised short ribs, pulled pork. Time at temperature matters more than the exact dial number.
Baking is about the whole structure setting evenly, not surface browning. Starch gelatinizes and gluten sets starting around 124 to 140°F internal2. An oven air temperature of 350°F gives the center time to reach that range before the crust's own Maillard browning outruns it.
Cakes, breads, casseroles: anything with a rise or a set structure to protect.
The Maillard reaction is amino acids and sugars reacting at a dry surface, not caramelization, and it stalls until surface moisture is gone. It runs fast in the 285 to 350°F surface range3,4. A 425°F oven setting works because the dial runs well above that onset, per the scale above.
Sheet pan vegetables, seared or roasted meat, toasted bread.
Char, or pyrolysis, is the thermal decomposition of a surface into carbon, taking over above roughly 355°F surface temperature3, beyond what a standard bake reaches. Used thin, it is a good thing: the blistered edge on peppers, corn, or brussels sprouts. Pushed further, it turns uniformly bitter.
Broiling, grilling over direct flame, a hard cast iron sear, or the last few minutes under a broiler for blistered vegetables.
| Oven setting | Reaction | Best for |
|---|---|---|
| 275 to 325°F | 🍲 Collagen to gelatin | Pot roast, braises, pulled pork |
| 350°F | 🍞 Starch and gluten setting | Cakes, breads, casseroles |
| 400 to 450°F | 🥩 Maillard reaction | Roasted vegetables, chicken, potatoes, pizza |
| Broil / 500°F+ | 🔥 Pyrolysis, char | Thin layer on grilled or broiled vegetables, seared meat |