When I was young, I was afraid of having a pork belly party in winter because I didn't want to wash lettuce.🥶

However, the fact is, if you soak lettuce in hot water (about 50 degrees Celsius) that is just not cooked for a while and wash it, the water molecules become active, allowing moisture to penetrate the wrinkled surface of lettuce as quickly and as much as possible, as a result, lettuce becomes fresher.

Cooking is science.