Take well-scraped pigs' feet, with the toes removed, and soak them in cold water overnight. The next morning put them in a kettle, add enough water to cover them, and let them cook until soft. This will require about five hours. Salt should be added to the water during the cooking. When the pigs' feet are soft, remove them from the water, split them, pack them in an earthen jar, and pour hot vinegar over them. Spices of various kinds may be added to the vinegar if desired.