London Broil was my Father's signature dish. When I saw it marinating in the fridge I knew we were in for a feast. In honor of Father's Day we dusted off Dad's recipe. London Broil is a good value and is delicious when grilled and sliced fairly thin. The secret to this recipe is the Catalina Dressing. An unusually sweet and thick salad dressing is a good marinade and made a sweet crust on the meat and the flavor permeated the meat as well.