To make the gravy, remove the tips of the legs, tail and wing tips from the chicken and put in a stock pot or casserole. Add the carrot, celery, roughly chopped onion, garlic, peppercorns ...
Mix the oil, carrots, onion and chicken wings in a roasting tin ... If it's important that the gravy is gluten-free make sure you check the label on the stock – many stock cubes and pots ...