There are many kinds of filling for this kind of snack, the one you said wrapped in lettuce leaves, the filling inside is leek + diced pork + diced carrots (or kudzu grains), put these together with s

There are many kinds of filling for this kind of snack, the one you said wrapped in lettuce leaves, the filling inside is leek + diced pork + diced carrots (or kudzu grains), put these together with salt and oil to fry after adding a small amount of fried peanut rice. The outer skin is made of boiling water and glutinous rice flour, similar to dumpling skin. After wrapped and then wrapped it with lettuce leaves can be steamed.