Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
  10      pounds        round or rump roast
   1      tablespoon    oregano
     1/2  cup           vinegar
   1      small         onion -- diced
   2      tablespoons   Worcestershire sauce
                        salt
  10      milliliters   garlic -- minced
                        pepper
                        -----sauce-----
   7 3/4  cups          water
   1      package       Italian dressing mix
   3                    beef bouillon cubes
   2      teaspoons     basil
   8      tablespoons   Worcestershire sauce
   1      package       au jus mix
   4      teaspoons     oregano

Preparation:

Mix vinegar,2 tbsp. Worcestershire sauce,1 tbsp. oregano and the garlic. Pour over seasoned meat, slicing onion on top. Cover lightly; roast at 350F 3 hours or until done. Slice when cool. Before serving, combine sauce ingredients; bring to boil. Cool 10 minutes, then add sliced beef. Serve on poorboy buns. May be refrigerated 2 to 3 weeks. Makes 10 to 16 servings.