4 slices bacon, diced
1 cup chopped onion
8 ounces sliced mushrooms
1 pot roast, a tender chuck or similar roast, about 3 to 4 pounds
2 tablespoons flour
1 tablespoon grill seasoning, such as Chicago steak or gourmet burger blend, or other meat seasoning mixture
olive oil or vegetable oil
1 cup beer
1 cup beef broth
2 tablespoons flour
4 tablespoons cold water