Shredded Pork Sandwich

Directions

• Place the ribs in a pressure cooker; add 4 cups water. Close cover securely; place pressure regulator on vent pipe. Bring cooker to full pressure over high heat. Reduce heat to medium-high and cook for 25 minutes. (Pressure regulator should maintain a slow steady rocking motion; adjust heat if needed.)
• Meanwhile, in a large saucepan, combine the onion, ketchup, Worcestershire sauce, salt and pepper. Combine the flour and remaining water until smooth; stir into onion mixture. Bring to a boil. Reduce heat; cover and simmer for 15 minutes.
• Remove pressure cooker from the heat; allow pressure to drop on its own. Remove ribs with a slotted spoon; cool slightly. When cool enough to handle, remove and discard bones. Shred pork with two forks; add to the sauce. Cook for 10 minutes or until heated through. Serve on rolls.