London broil steak isn't the most common preparation, so it's understandable if you don't know what type of wine to pair with ...
When the term "London broil" first spread through America, it referred to a lean cut of beef, like flank steak or round, tenderized with a marinade before cooked under a broiler and sliced against ...
While originally made using the London Broil cut of beef, when that became hard to find, our family switched to using flank or skirt steak. In fact, I would argue my mom made it with flank steak ...