Lemon Pork Chops-Pressure Cooker

Ingredients:
- 20 pork chops, 1/2 inch thick
- 1/4 cup cooking oil
- 20 slices lemons
- 4 onions, cut into rings
- 1 teaspoon salt
- 1 teaspoon pepper
- 2 cups ketchup
- 2 cups water

Directions:
- Heat cooker, add oil and brown chops.
- Top each chop with a lemon slice.
- Add onions, salt and pepper.
- Combine ketchup and water, pour over chops.
- Close cover securely.
- Place pressure regulator on vent pipe and cook 10 minutes at 15 pounds pressure.
- Let pressure drop of its own accord.