Ingredients

• 1/4 cup soy sauce
• 2 tablespoons rice vinegar (not seasoned)
• 1 tablespoon grated peeled ginger
• 1 garlic clove, minced
• 2 teaspoons Sriracha (Southeast Asian chile sauce)
• 2 teaspoons sugar
• 1 1/2 teaspoons Asian sesame oil
• 1 to 1 1/4 pound flank steak
• 2 scallions, finely chopped
• 2 tablespoons toasted sesame seeds
• Accompaniments: white rice; soft leaf lettuce

Instructions

1. Stir together soy sauce, vinegar, ginger, garlic, Sriracha, sugar, and sesame oil.
2. Prepare a gas grill for direct-heat cooking over medium-high heat.
3. Oil grill rack, then grill steak, covered, turning over once, 6 to 8 minutes for medium-rare.
4. Transfer steak to a cutting board and drizzle with 2 tablespoons sauce, then let stand, uncovered, 5 minutes. Thinly slice steak across the grain. Serve with remaining sauce, scallions, and sesame seeds.