1. Peel the lettuce with a planer (the white stems should be cleaned, which will affect the taste), rub them into shreds with a scraper, add 5 grams of salt and mix well for about half an hour.

2, pickling appearance (pickling time should not be too short, lettuce tastes crisp and refreshing. If the pickling is not thorough, water will still come out after stirring, which will affect the taste.

3. Add onion oil, half a teaspoon of salt and sugar and mix well (sesame oil or olive oil can be added without onion oil).