1 boneless beef roast (3 lbs) 1 medium onion, chopped 1/3 cup white vinegar 3 bay leaves 1/4 tsp ground cloves 1/8 tsp garlic powder 12 hamburger buns, split Cut roast in half; place in slow cooker. Combine onion, vinegar, bay leaves, cloves, and garlic powder in a...
