YIELD: 2 quarts | PREP TIME: 5 minutes STOVETOP: about 4 hours | SLOW COOKER: about 10 to 12 hours | PRESSURE COOKER: about 1 hour 4 pounds pork bones, ideally including a foot 2 large leeks, cleaned and chopped (see Tip on here ) 1 (4-inch) piece fresh ginger, sliced...
