3 best barbecue beef sandwiches Recipes

boneless beef chuck roast (3 to 4 lb), ketchup, onion, finely chopped, brown sugar, red wine vinegar, dijon mustard, worcestershire sauce, garlic cloves, minced, salt, celery seed, paprika, pepper, cornstarch, cold water, kaiser rolls, split, dill pickle slices, optional

leftover cooked pot roast, water, beef bouillon cubes, barbecue sauce, mushrooms, hoagie rolls, mayonnaise