The Maillard reaction is the browning and flavor development that occurs when amino acids and reducing sugars react under heat. It creates many of the roasted, toasted, nutty, and savory aromas associated with seared meat, toasted bread, roasted coffee, browned vegetables, and baked foods.
Conditions that encourage browning
- A dry surface: Pat meat and vegetables dry before cooking. Surface moisture must evaporate before strong browning can begin.
- Sufficient heat: Use a properly preheated pan or oven and avoid constantly moving the food.
- Space in the pan: Crowding traps steam and lowers the pan temperature.
- Time and contact: Allow the food to remain against the hot surface long enough to develop color.
Maillard reaction versus caramelization
Both processes create browning and complex flavor, but they are different. The Maillard reaction involves amino acids and sugars. Caramelization is the breakdown and browning of sugars alone.
Cooking tip
Brown food deeply, but do not burn it. Golden brown to deep brown usually adds flavor; blackened residue generally tastes bitter.