2 Tbsp vegetable oil 3 1/2 lb boneless beef chuck roast 1 large onion, thinly sliced 1 1/2 cups beer (12 ounces) 2 Tbsp cider vinegar 2 Tbsp light brown sugar, packed 2 bay leaves 2 Tbsp fresh dill, snipped (or 1 tsp dried dill weed) 1 tsp salt 1 tsp black pepper 1/2 tsp allspice (or 1/4 tsp ground ...