Beer-Marinated Steaks with Peppercorn Sauce

Place steaks in single layer in glass baking dish. Whisk beer, sugar, lime juice, onion, garlic, Worcestershire sauce, mustard, oil, ginger and hot pepper sauce in large bowl to blend. Pour marinade over steaks in baking dish. Cover tightly with plastic wrap and refrigerate overnight. Bring white wine, chopped shallot and crushed peppercorns to boil in heavy medium saucepan; simmer until mixture is reduced by half, about 5 minutes. Add chicken stock and beef stock and boil until reduced to 2 cups, about 25 minutes. Add whipping cream and cook until sauce coats spoon, about 6 minutes. (Peppercorn sauce can be made up to 2 hours ahead. Set aside at room temperature.)Prepare barbecue (medium-high heat). Remove steaks from marinade and grill to desired doneness, about 4 minutes per side for medium-rare. Transfer steaks to plates. Meanwhile, bring peppercorn sauce to simmer. Drizzle sauce over steaks.