Ingredients: 1 kg spare ribs Marinade: 1 tbsp oyster sauce 1 tsp sugar 1 tsp salt 1 tsp sesame oil 1 egg 1 tbsp plain flour 1 tbsp custard powder 1 tbsp baking soda 200 ml water 200 g corn flour Vegetable oil Sauce: 2 tbsp maltose 2 tbsp sugar 1 tbsp worcestershire sauce 2 tsp instant …