Beef and pork barbeque

1 1/2  pounds        beef stew meat
   1 1/2  pounds        pork -- cubed
   2      cups          onion -- chopped
     1/2  cup           brown sugar
   2      teaspoons     salt
   1      teaspoon      dry mustard
   3      teaspoons     chili powder
     1/4  cup           vinegar
   2      teaspoons     worcestershire sauce
   1      (16 oz.) can  tomato paste

In crockpot, combine all ingredients.  Cook 1 hour on high setting; reduce 
heat to low setting and cook 7 to 9 hours, until meat is tender.  With 
fork, stir to break up meat pieces.  Enough for 16 hamburger buns.

 Oven Directions:  In Dutch oven or large casserole, combine all 
ingredients.
Bake at 325 degrees for 4 hours or until meat is tender.  With fork, stir 
barbeque mixture to break up meat pieces.