2 dried large Chinese mushrooms, soaked in water and drained. Cut into strips.
2 ½ oz. boiled bamboo shoots, cut into strips
2 cabbage leaves, cut into strips
½ tsp salt
Oil for deep frying plus 3 tbsp more oil
Combine the pork and Mixture A. Let sit for 15 minutes.
Heat 3 tbsp of the oil in a wok, and stir-fry the pork briefly. Remove.
Heat the remaining 1 tbsp oil and add the salt. Stir fry the vegetables, then mix in the pork. Turn off the heat and let the filling cool thoroughly.
Place some of the filling a little above the center of each spring roll skin. Fold the upper edge over the filling, turn in the 2 sides, and roll it down to the bottom. Brush the bottom edge with the flour-and-water paste to seal it thoroughly.
Heat the deep-frying oil over moderate heat. Deep-fry the spring rolls until golden. Turn them frequently.