Beef Broth Gravy

1 T butter
1 T olive Oil
1 onion minced
2 celery stalks, minced
saute then cook 8-10 minutes to thouroghly soften onion and celery
Add
10 1/2 oz can Campbells beef broth
1 C Water
1 cube Beef boulion
Stir and cook 20 minutes
Add
2 T Cornstarch in small amount of water
1/4 t Kitchen Bouquet

Boil 1 minute