In a shallow dish, COMBINE soy, ginger, garlic, oil, vinegar, pepper flakes and five-spice.
PLACE meat in marinade, TURNING to coat.
COVER; REFRIGERATE overnight.
One hour before grilling, REMOVE steak from refrigerator.
GRILL meat over medium heat 8 minutes per side (adjust time depending upon thickness of steak).
Let STAND for 10 minutes; SLICE into 1/4-inch slices, across grain.
Per Serving (excluding unknown items): 365 Calories; 20g Fat (49.8% calories from fat); 41g Protein; 3g Carbohydrate; trace Dietary Fiber; 89mg Cholesterol; 1465mg Sodium. Exchanges: 5 1/2 Lean Meat; 1/2 Vegetable; 1/2 Fat; 0 Other Carbohydrates.