The authentic method of making oyster sauce lettuce is as follows: 1. Peel a head of garlic, cut half of it into irregular garlic cloves and cook in a pot for later use.

2. Mince the remaining half of the garlic, add oyster sauce, light soy sauce, chicken essence, sugar, and salt according to the proportions in the above list to make a bowl of juice and set aside.

3. Rinse the lettuce through hot water. Adding a small amount of cooking oil and salt to the pot when blanching will help keep the green vegetables green.

4. Plate the blanched lettuce and set aside.

5. Heat the oil in a pan, add the garlic cloves cut in the first step and cook it, then add a bowl of sauce and use hot oil to bring out the aroma of the sauce.

6. Pour the cooked juice evenly over the lettuce, and drizzle with a spoonful of sesame oil to add flavor.