In crock pot, put water, cloves, roasts and onion. Cook on low for 8 hours. Them remove, de-bone and remove fat, discard cloves, onion and water. Shred pork and put it back in the crock pot with a new sliced onion and the bottle sauce. Cook on low 4 to 8 hours. Serve with slaw and on buns. Great for a crowd.