How is the skin of KFC's old Beijing chicken rolls made?

Ingredients: one chicken leg (chicken breast), flour, starch, water, salad oil (edible oil), salt, soy sauce, cooking wine, pepper, Chili powder, eggs, cucumber and onion, salad dressing, sweet noodle sauce and sugar.

1

Wash the chicken leg, cut it into small pieces, add appropriate amount of salt, Chili powder (Mexico), black pepper and cooking wine, stir well and marinate for about 20 minutes.

2

Add proper amount of flour and dough with warm water, knead into a dough with moderate hardness, and cover it with plastic wrap for 30 minutes.

three

Put salt, sugar, black pepper, flour, starch, water and eggs into a small bowl and beat them into a batter, then add a little salad oil and mix well for later use. Wash cucumber and scallion, cut into strips and shredded for later use.

four

Brush the woken dough with a little oil and cover it with another flat dough, roll it into pancakes, put it in an electric baking pan without oil until both sides change color, put the baked cakes into a basin, and cover them with cloth to prevent hardening.

five

Add more oil to the pot and heat it. Dip the marinated chicken leg with a layer of paste, then with a layer of dry flour, and fry it in a pot until golden brown.

six

Spread some sweet sauce and salad dressing on the cooked cake, add cucumber strips and shredded onion, then add fried chicken pieces and roll them up.