To make a homemade chicken broth, start with a raw whole chicken or chicken pieces. Place the chicken in a pot and add in cold water to cover the chicken and bring to a boil over medium-high heat. Once it is boiling, turn the heat to low and skim the foam off the top with a spoon to remove the fat. Add in chopped celery, carrots, onion and salt. You may also add rosemary, thyme, garlic and bay leaves for extra flavor. Simmer for 1 to 5 hours until the chicken is fully cooked. Once it is fully cooked, you can remove the chicken and shred it if desired. Strain the broth using a cheesecloth and put it in a bowl and refrigerate overnight. The next day, scrape off any fat that has accumulated on top of the broth. You can divide up the broth and store in freezer-safe containers until you’re ready to use the chicken broth for casseroles, soups, stews and more.