1 md Onion
half c Olive Oil
5 tb Lemon Juice
2 tb Soy Sauce
2 tb Minced Fresh Parsley
5.5 tb Minced Fresh Ginger
1 tb Ground Cumin
1 tb Chili Powder
2 ts Sherry
1 ts Turmeric
1 ts Dried Oregano
1 ts Coursely Ground Pepper
2 lg Garlic Clove
4 lb Flank Steak
Mix frist 13 ingredients in large bowl. Divide marinade mixture between 2 large shallow baking dishes. Add steaks to marinade, turning to coat. Cover and refrigerate overnight. Grill steaks to desired degree of doneness, about 8 minutes on each side. Heat marinade in saucepan. Cut steaks diaganally into thin slices. Pour some marinade over . Garnish with cilantro and serve.