Chlorophyll in lettuce is destroyed by high temperature, so it changes color. Proper amount of edible oil and salt can be added when blanching.

Ingredients: lettuce

Accessories: edible oil, edible salt and water.

Operating steps:

1. Wash lettuce with clear water and break it into big leaves.

2. Boil the water in the pot, add a few drops of cooking oil and half a spoonful of edible salt.

3. Put the lettuce in the pot for about 20 seconds, turn it emerald green and take it out.

4. Wash the water and put it on the plate to prepare relevant dishes.