blanch

Imagine a cook dropping bright green beans into boiling water and then into ice water in a flash--that's blanching. It means briefly scalding food in boiling water and chilling it fast to stop overcooking, keeping vegetables, fruits, or nuts bright and crisp. But the word also stretches beyond the kitchen: it can describe someone's face suddenly losing color from fear, shock, or illness, like someone "blanching" at a bad headline.

To blanch has two major uses, both tied to a sudden or deliberate loss of color. In cooking, it is a short process: food is briefly plunged into boiling water, then rapidly cooled in ice water. This pause in heat inactivates enzymes that can degrade flavor, color, and texture, and it is often used before freezing or peeling produce. The goal is not to fully cook the ingredient, but to prepare it for the next step while preserving brightness.

In people, blanch means to become suddenly pale, usually from emotion, shock, fear, or poor health. If someone "blanched at the news," their complexion drained as they reacted.

Historically, blanch also referred to a way of whitening cloth, often through exposure to sunlight and air. That older sense is rare now, but it matches the core idea: reducing color in one way or another.