What's actually happening
The Maillard reaction is a cascade of reactions between amino acids and reducing sugars under heat. It is not the same as caramelization, which is sugar alone. Maillard is why seared steak, toasted bread, roasted coffee, and browned onions all share that deep, savory, slightly nutty character despite being completely different foods.
Crucially, it needs heat above the boiling point of water. As long as the surface of your food is wet, it will sit at 212°F (100°C) — hot enough to steam, too cool to brown.
How to get a real sear
Three things stand between you and good browning: moisture, crowding, and impatience.
Pat proteins dry with a paper towel before they hit the pan. Use a pan hot enough that a drop of water skitters and evaporates on contact. And give the food room — a crowded pan traps steam, drops the temperature, and you end up gently boiling dinner. Cook in batches if you have to.
Then leave it alone. A crust needs uninterrupted contact with hot metal; flipping every few seconds never lets one form. When the food releases cleanly from the pan, it is ready to turn.
Where it shows up in your week
Browning is free flavor — no extra ingredients required. Searing the chicken before it goes into a braise, or roasting vegetables instead of steaming them, makes a measurable difference. Pair a good sear with a quick pan sauce and a basic recipe eats like a restaurant plate.