Preparation - Sprinkle meat tenderizer all over the beef roast. Bake at 350º for 2 hours or until tender. Remove the roast and let cool. In a large saucepan, add remaining ingredients. simmer for 10 minutes. Shred the roast and place in a large skillet. Pour the sauce over the beef and toss to coat all the meat. Simmer for 1 hour, stirring often to prevent the meat from sticking to the skillet. Serve on Kaiser rolls.