Bitter Melon Ribs Soup

Pork bone washed cold water in the pot, add a spoonful of cooking wine, cook out the foam, fish out and wash, add washed soybeans and pork bones to the pressure cooker, high heat boil (pressure cooker began to jet), and then turn to a small fire (pressure cooker jet for 2 minutes), turn off the fire, add the cut pieces of the bitter melon, add the right amount of salt, cover the pressure cooker, high heat cook to the pressure cooker began to jet, turn off the fire.