Directions

• Place flank steak in a shallow dish. Combine the 1/2 cup barbecue sauce, oil and lime zest. Pour over the steak, turn to coat.
• Cover and marinate at least 4 hours or overnight in the refrigerator.
• Remove from marinade and cook on a grill rack set over hot coals for 10-12 minutes, turning once.
• While the steak is cooking, combine ingredients for the mayonnaise until well blended. Spread mayonnaise mixture on bottom half of your favorite bun, layer with lettuce and thinly sliced steak.
• Top with bun tops. Makes 8 sandwiches.