In a large bowl, whisk together the garlic, ginger, soy sauce, sugar, and lime juice.

Cut the flank steak into 1/4 inch thick strips that are 5 inches long.

Place the steak strips into the bowl and coat in the marinade. Cover and refrigerate 20 minutes, or up to 8 hours.

Thread steak onto wooden skewers, cover the end of skewers with a piece of foil so they don't burn and grill or broil for 2 minutes on each side.