2 sprigs fresh thyme
1 sprig fresh rosemary
2 stalks celery, cut into chunks
3 medium carrots, cut into chunks
2 1/2 cups chicken broth
1 tbsp. tomato paste
1 1/2 tbsp. all-purpose flour
1 tbsp. butter
2 cloves garlic, minced
1 medium onion, chopped
8 oz. sliced mushrooms
2 tbsp. vegetable oil
1 tbsp. all-purpose flour
pepper
salt
5 pounds bone-in beef pot roast