Rule 23 of 27 · Chapter V — Tasting and Finishing
Pull it off slightly early and let carryover finish it
Why this rule exists
Food keeps cooking after it leaves the heat, and forgetting that is how careful cooks still end up with overdone results. Residual heat stored in a roast, a fillet, or a pan of vegetables continues to raise the internal temperature for minutes after you remove it, sometimes by several degrees, which is more than enough to take a steak from medium-rare to medium or turn bright green beans army-drab. The fix is to stop cooking before the food reaches its target, trusting carryover to close the gap, rather than cooking to the finish line and watching it sail past. This is especially true for large or dense items that hold a lot of heat. Learning to anticipate carryover, to aim a little short, is what lets you hit doneness precisely instead of chasing it and always overshooting.
In practice
For meat, pull it off the heat a few degrees below your target temperature and let resting carry it the rest of the way; a thermometer takes the guesswork out. Shock blanched green vegetables in ice water the moment they are just tender, to stop the cooking dead and lock the color. Undercook pasta slightly, to just before al dente, if it will finish in a hot sauce. Move food off the burner or out of the pan promptly rather than letting it coast on residual heat unnoticed. In general, aim for a touch under and let the leftover heat, or a resting sauce, bring it home.
When it doesn't apply
Thin, quick-cooking items carry little heat and need little or no allowance, so aiming short can leave them underdone. Foods that must reach a safe internal temperature, like chicken and pork, should hit that mark, and you plan the carryover to land there, not below it. And some dishes want to be cooked fully through with no pink, so cook them to done and skip the guessing.