remove any visible fat from the roast and discard the fat. Place the roast into a slow cooker. In a medium bowl combine soy sauce, beef bouillon cube, bay leaf, black peppers corns, rosemary, thyme, and garlic powder. Pour the mixture over the roast. Add enough water to almost over the roast. Add any vegetables if you desire. Cover and cook in the slow cooker for 10 to 1 hours on low heat until the roast is very tender.
Remove the roast from the broth (reserving the broth). Shred the roast with two forks. Place shredded beef onto sandwiches.
Place the reserved broth into cups or small bowls for dipping.