(Traditional home cooking) Coq au Vin (Chicken in Wine)

I was watching a lady cook this dish today at an outdoor festival, and she told me how to make the dish. Marinate chicken drumsticks in red wine and then brown the chicken drumsticks in oil. Place the browned chicken drumsticks, with the contents of one bottle of red wine, the contents of one carton of (commercial) chicken stock, salt, pepper, onions, garlic and mushrooms into an oven proof pot with a lid and bake at 150 C for about 80 minutes, then test to see if it is cooked. If it is needed, cook longer.