Pressure Cooker Calabacita (Spanish Steak)

Combine flour, salt and pepper. Cut steak into 6 pieces and tap about half flour mixture onto steak with sharp edge of knife.

Heat shortening in pressure cooker, without rack, on a high heat. Add meat and cook until well-browned on both sides.

Remove meat and blend remaining flour mixture with shortening. Place rack in cooker. Add meat, tomatoes, onions, celery, green pepper, garlic and Worcestershire sauce. Cover with pressure cooker lid, leaving pressure control open.

When steam escapes, close pressure control and when steam escapes again, adjust heat to cook 20-25 minutes at 15 pounds pressure.

Remove pressure cooker from heat and cool quickly with cold water. Then open pressure control and remove lid. Serve immediately.