4 to 5 pounds Chuck Roast
1 tablespoon Sesame Seeds
1 tablespoon Butter or Margarine
1/2 cup Strong Coffee
1/2 cup Soy Sauce
1 tablespoon Worcestershire Sauce
1 tablespoon Vinegar
2 tablespoons Cornstarch
3 tablespoons Sherry or Water
1 teaspoon Sesame Seeds (optional)