First of all, I think the first function of this lettuce is beauty. Many stores will pay attention to setting dishes, giving people a visually delicious feeling. So just pieces of meat and the like, it looks a bit monotonous. I just want to add some colorful things to make this plate look colorful. So I will put some lettuce under the meat. It is not so monotonous.
The second function is to get rid of fishy smell. Or to prevent blood from flowing out, it looks unsightly and makes people lose their appetite. We all know that meat must have a fishy smell, so using lettuce can get rid of some fishy smell of meat, and it can prevent blood from flowing to the plate and affecting customers' appetite. This is similar to when we eat barbecue, we may roll lettuce to eat meat, which is particularly delicious and not too greasy.
The third function is to fill the number. Sometimes adding lettuce to a big plate or plate will make it look full, and it will be thought that the merchants give a lot of meat, so the merchants will put some lettuce in the meat plate, which will make it look more meat and the plate more full, giving people a visually affordable feeling. So, there will be some big lettuce leaves. The same is true of seafood.
The dishes in the hot pot are also exquisite. Have you ever noticed it?