Caramelization

Caramelization is Sugar cooking until it darkens and smells of caramel, not of fruit and not of roast bread. It does not require protein. Maillard reaction does. There is no single Fahrenheit commandment; color and smell are the signals.

Sugar in a pan #

Dry sugar melts, then colors. Residual moisture has to leave first — Evaporation. Watch: wet and sandy, then clear, then straw, then amber, then mahogany, then carbon. Smell: sweet cooked sugar, then bitter smoke. A thermometer reading without those cues misses the material’s changing state.

Crystals that seize a caramel are Crystallization seeding the pan. Wash the walls or start over. Quality failure.

Sugar in jam is usually not caramel #

Ohio State: overcooking fruit on the way to juice can damage pectin, flavor, and color; overcooking the spread can also throw sugar crystals ¹. A jam that tastes cooked-down and looks dull is concentrated fruit and sugar, sometimes scorched. That is still Jam, not a dry-sugar caramel. Stop by sheet, plate, or the pectin process you are actually on — not by “cook until caramel.”

Bread crust is mostly the other browning #

Calvel treats crust and crumb as the baker’s finished observations ². King Arthur: vent steam so the crust can brown and firm in dry heat ³. Lean bread has little added sugar; the brown is not a pan of sucrose. If you want that distinction in the oven, see Maillard reaction and Baking the loaf.

Action: decide which brown you are making. Sugar alone, fruit plus sugar, or crust. Taste before it tastes of ash.