Chop coriander, cut ham in half, stir-fry, chop onion, stir-fry until soft, mix 1 spoon Thai sweet and spicy sauce, half spoon tomato sauce, half spoon oyster sauce, half spoon soy sauce, half spoon water and roasted white sesame evenly, soak the spring roll skin in water for 1 second, shake off the surface moisture, and put it in a pot with low heat. Beat in 1 egg, spread it out, turn the skin of spring rolls over, brush a layer of sauce evenly, add sausage, onion and coriander, roll up the skin of spring rolls, brush a layer of sauce and cut into pieces to eat.