This is a quick and easy to make sandwich. Tasty too...
In a covered Dutch oven or saucepan, simmer beef in water for 1-1/2 hours or until tender. Drain cooking liquid, reserving 3/4 cup.
Cool beef; shred and return to Dutch oven.
Add cabbage, barbecue sauce, catsup, Worcestershire sauce, horseradish, mustard and the reserved cooking liquid.
Cover and simmer for 1 hour.
Serve on rolls.