Resep dim sum

Material:Wonton Skin:375 gr flour chakra150 ml boiling water80 ml cold water1 tsp fine salt1 tablespoon cooking oilContents:250 gr minced chicken100 gr shrimp cncang5 pieces hioko mushrooms, soak water, thinly sliced200 gr white cabbage, thinly sliced, soaked hot water, drained1 tbsp cornflour1 egg4 cloves garlic, crushed2 cm ginger, grated1 tablespoon soy sauce½ tbsp fish sauce2 tsp sugar½ tsp