excaldare

Excaldāre comes from Late Latin, from ex- (thoroughly) + calidus (hot) + -āre (verbal suffix). To scald was to wash with hot water — an act of cleaning rather than cooking. The word entered English through Anglo-Norman escalder in the thirteenth century. The cooking meaning developed alongside the danger meaning: scalding is heating a liquid to just below boiling, and scalding is also what happens to skin when it contacts that liquid. The word names both the technique and the hazard.

In cooking, scalding milk means heating it to about 82°C (180°F) — the point where small bubbles appear at the edges of the pot and steam rises from the surface. Before pasteurization, scalding milk was necessary to kill bacteria and deactivate enzymes that would interfere with yeast in bread-making. Modern pasteurized milk does not require scalding, but many recipes still call for it. The technique has outlived its necessity. The word keeps it alive in recipe instructions.

Scalding is also used to loosen skins. Tomatoes dipped in boiling water for 30 seconds release their skins easily. Peaches, the same. Pigs slaughtered on farms were scalded in hot water to loosen the bristles for scraping. The technique is about using extreme heat briefly — long enough to affect the surface, not long enough to cook the interior. The word names a controlled burn.

The injury meaning is older than the cooking meaning in common usage. A scalding burn — from hot water, steam, or oil — is one of the most common kitchen injuries. The word warns as much as it instructs. To scald is to approach a dangerous temperature with deliberate purpose, knowing that the margin between technique and accident is narrow.