save your bones and pieces that don't look so tasty (gizzards)
put in a crock pot with cold water
add: onion, carrot, celery (you can even just throw in your celery ends a chunk of whole onion and a chunk of carrot, it doesn't need to look pretty)
add 2 tbsp. apple cider vinegar (helps to leach out the minerals)
cook 12-24 hours
store in your freezer in a glass jar
pull it out whenever you make rice, soups, noodles, whatever for added nutrition and excellent flavor!