Soak twelve 10 or 12-inch wooden skewers in enough water to cover 10 minutes; drain.
Place garlic in blender container. Cover; process, pulsing on and off, until garlic is finely chopped. Add remaining marinade ingredients; process until mixture is blended.
Cut beef Flank Steak diagonally across the grain into 1/4-inch thick strips. In medium bowl, combine beef and marinade; toss to coat. Marinate 10 minutes.
Thread an equal amount of beef, weaving back and forth, onto each skewer. Place beef on grid over medium ash-covered coals; grill, covered, 4 to 6 minutes for medium rare (145°F) to medium (160°F) doneness, turning once. Season with salt, as desired. Garnish with lime and cilantro sprigs, if desired.
Nutrition information per serving: 183 Calories; 81 kcal Calories from fat; 9 g Total Fat; 3 g Saturated Fat; 4 g Monounsaturated Fat; 42 mg Cholesterol; 183 mg Sodium; 1 g Total Carbohydrate; 0.2 g Dietary Fiber; 24 g Protein; 1.7 mg Iron; 7 mg Niacin; 0.5 mg Vitamin B6; 1.4 mcg Vitamin B12; 4.4 mg Zinc; 27.3 mcg Selenium;