Soak the natural solomon's seal in water for 30 minutes, rinse thoroughly and slice it for later use;
Rinse the Canada ginseng slices and black dates(L) thoroughly for later use;
Soak the dried mandarin peel (aged ) in water, remove its vein, rinse thoroughly and dry it;
Defrost the American frozen conches(L), cut the internal organs, brush and clean them with coarse salt;
Rinse the pork loin and cut it into pieces, blanch the pieces and conches in water with ginger and spring onion for later use;
Put all ingredients into a casserole, pour in some hot water and boil for about 2 hours, add salt and serve.