ELI5 science

How heat actually cooks food

Cooking is energy moving into food until proteins, starches, and water change their behavior.

Published

The simple picture

Heat is a push. The pan (or oven, or steam) pushes energy into the outside. The outside then pushes energy inward. Thick food has a longer hallway; thin food has almost none.

Three common paths

Contact (a skillet), hot air (an oven), and steam or water (poach, braise). Water can’t get hotter than a boil unless it’s trapped under pressure. That’s why a stew never Maillard-browns on its own — the liquid caps the temperature.

What we won’t claim

Heat changes texture and flavor. It also reduces some food-safety risks when used correctly — follow trusted food-safety guidance for that, not a wellness pitch. Educated Cook explains methods; it does not prescribe diets or cures.