1/3 tsp. cayenne pepper
1 lg. red onion
3/4 c. fresh lime juice
2 lbs. boneless pork steak, about 1/2 inch thick

Trim fat from pork as needed. Thinly slice red onion. Place pork and onions in glass or enamel 12 x 9 inch baking dish. Combine lime juice and cayenne. Pour over pork. Cover and refrigerate for several hours. Lift pork steaks out of marinade, brushing off onions. Broil or cook over hot coals 10 to 15 minutes. Heat onions and lime juice to boiling. Serve onions with cooked pork. Serve with tortillas, if desired.