2. Put the beef into the pot in cold water and cook until it becomes discolored. Soak the beef in cold water, put the bottom oil and crystal sugar in the pot, stir-fry until caramel color, then add the beef and stir-fry. After the beef is colored, pour in white wine and stir-fry, pour in light soy sauce for seasoning, and stir-fry until the beef is colored.