Gravy Soup - cooking recipe

Ingredients

5 tablespoons butter
5 tablespoons flour
7 cups beef stock
1 cup buttered crouton
1/4 cup grated swiss cheese

Preparation

Melt butter in a deep saucepan.
Add flour and stir well.
Cook over low heat until deep brown, stirring constantly.
Gradually add stock, stirring constantly.
Bring to a boil.
Cover and simmer over medium heat for 1 1/2 hours, stirring occasionally.
Top with croutons and grated cheese.