What do you need?
1 Chicken, whole. Rinsed inside and out. Roasters work, as well as old hens.
3 Carrots, cleaned.
3 Ribs of Celery, cleaned and broke in half.
1 Onion, paper skin removed and cut in quarters.
1 Garlic Clove
2 Tbsp of Dried Parsley
Put everything in a 12 qt stockpot, cover with water, and bring to a boil...
Once boiling, reduce heat and let simmer for 6-12 hours. The longer you simmer, the better flavor you will get from your broth. But, remember, you will have cooked the chicken to death, so you cannot use for whatever soup you choose to make with your broth.
Once done, run the broth through a colander. This is what it looks like: