First up is we need to prep your whole chicken. Remove the innards from chicken and rinse the cavity. Rinse the body of the chicken under water. Place your whole chicken in a large soup pot.
Add your quarter onions, whole carrots, whole celery into the pot. Add the cut garlic with skins on, bay leaves, salt and peppercorns. Fill the pot with water leaving about 1/3 of it open at the top but cover your chicken with water. The larger the pot the better here.
Bring to a boil over medium-high heat and then reduce to a low simmer and cook for 3.5-4 hours until chicken is tender and cooked through and broth is flavorful. Temperature check your chicken and you will know it's done when the bone and meat falls apart easily.
When whole chicken bone broth is doing simmering. Set aside to cool down slightly. Remove the chicken from the pot with tongs and set aside to cool.