3 lb (1pc) Round Bone Sirloin
1/3 c  Orange Juice
1/4 c  Whiskey
12    Peppercorns
1    Med Orange, Thinly Sliced
1/3 c  Lemon Juice
1/4 c  Vegetable Oil
1    Small Onion, Thinly Sliced
1 ts Salt

When getting the steak look for a good piece that is about 2-inches thick.
Place steak in shallow baking dish. In small saucepan combine remaining
ingredients except orange. Over low heat, simmer 5 minutes; pour over
meat. Top with orange slices; cover. Refrigerate 4 to 6 hours, turning
occasionally. Remove meat from marinade; grill or broil as desired. Heat
remaining marinade and serve with steak.