1. Remove leaves and peel from lettuce, cut roots, wash, obliquely cut into thin slices, put in a pot, blanch with boiling water, and take out;

2. Cut the onion into powder;

3. Heat the salad oil in a wok, and add the pepper to stir fry;

4. Take out the pepper and add chopped green onion to taste;

5. Add lettuce and stir well. Finally, add salt, soy sauce and monosodium glutamate and stir-fry until cooked.