Lime Marinated Flank Steak

Bahan-bahan (4 porsi)

• 4 medium limes, (juiced)
• 1 teaspoon lime zest
• 3 tablespoons soy sauce
• 2 whole green onions, (chopped)
• 2 tablespoons minced fresh ginger
• ½ teaspoon red pepper flakes
• 1½ pounds flank steak
• kosher salt and freshly ground black pepper