Quick Chicken without brownies breasts

1 1/2 tablespoons butter 1 tablespoon olive oil 1 kg chicken fillet , cut into pieces 200 g bacon , diced 200 g mushrooms , thickly sliced 1 onion , chopped 3[...]

5 pounds chicken bones and backs * 2 each onions peeled 1 each leek * 1 each carrot 2 each celery stalks 8 each parsley leaves sprigs * 1 each bay leaf * 2[...]

1 1/2 tablespoons butter 1 tablespoon olive oil 1 kg chicken fillet , cut into pieces 200 g bacon , diced 200 g mushrooms , thickly sliced 1 onion , chopped 3[...]