Combine all ingredients except the steaks and whisk together well. Add the steaks and allow to marinate in the fridge for 4 to 6 hours or overnight. Turn the steaks at least twice during this time.
Remove the steaks from the marinade and barbecue or grill to required doneness, brushing with a little marinade during cooking but discarding any left over marinade.
Per serving: 1511 Calories (kcal); 162g Total Fat; (91% calories from fat); 2g Protein; 31g Carbohydrate; 0mg Cholesterol; 2138mg Sodium Food Exchanges: 0 Grain(Starch); 0 Lean Meat; 0 Vegetable; 2 Fruit; 32 1/2 Fat; 0 Other Carbohydrates