Octopus and peanut pork knuckle soup

Formula: pig's trotters 1, octopus and peanuts 100g, 2 slices of ginger and proper amount of salt.

Practice Scrape the trotters clean, cut them into large pieces (please ask the meat stall to help you), wash them, blanch them in boiling water for 5 minutes, and drain them. Soak octopus for 20 minutes and wash peanuts. Add a proper amount of water to the casserole and bring to a boil. Add all the ingredients, simmer for 30 minutes, then simmer for 1.5 hours, and season with salt.