Browning Is a Reaction, Not a Colour: What Stops It, and How to Stop Stopping It

The brown crust on a seared steak, a roast onion or a loaf of bread is not the food burning. It is the MAILLARD REACTION: amino acids and sugars rearranging into hundreds of new aromatic compounds that were not in the raw ingredient at all. It needs heat above roughly 140 degrees Celsius, and it is slow below that. Which creates the single most important fact in everyday cooking: **water boiling in the pan holds the surface at 100 degrees, so nothing browns until the water has gone.** Almost every failure to brown is that one mechanism wearing a different hat — a wet surface, a crowded pan, a cold pan that cannot recover, a lid trapping steam. Fix the water and the browning takes care of itself.