1 Medium onion
1/2 c Olive oils
5 tb Lemon juice
2 tb Soy sauce
2 tb Minced fresh parsley
5 1/2 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 Large 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.