I went to the Cantonese restaurant to learn it.
Step1:Wash the lettuce and boil it in a stainless steel pot.
Step2:When the water boils, prepare oyster sauce, soy sauce and sesame oil in small bowl. (oyster sauce is salty. No salt
Step3:When the water boils, add a little oil, then add lettuce. Immerse in the boiling water for 30 seconds, and then get out of the pot immediately. (hurry up. Do remember to pour the excess soup out of the bowl.)
Step4:Add a little water to the seasoning bowl, mix well, and pour over the scalded lettuce. (eat while it's hot.)
Cooking tips:Scalding lettuce in an iron pot will make it black. There are skills in making delicious dishes.