4 c. beef broth or chicken broth
3 Tbsp. cornstarch
1/4 c. water
1/2 tsp. dry thyme
1/4 tsp. black pepper

Bring the broth to a boil in a medium saucepan. Boil until reduced by one third volume or approximately for 10 minutes. In a small bowl combine cornstarch and water. Gradually add to the hot broth, stirring constantly. Cook over low heat, stir constantly for 5 minutes or until thickened. Add the thyme or pepper. Stir to mix.