In a dutch oven fry bacon till chrisp.Drain on paper towl,reserve 2 Tbsp bacon drippings. Brown beefin bacon drippings,drain. Add onion,catsup,(or BBQ sauce),musterd,brown suger,and vineger. Blend in beans.Add beef stock. Place lid on dutch oven. Set in coals,cook for 4-5 hours. Serve with rolls or bread.