As carnivorous home cooks know well, hitting that perfect, often elusive medium-rare is all about technique -- and when it comes to nailing an oven-cooked London broil, the key is a pre-cook marinade.

In short, London broil is a technique in which an inexpensive yet flavorful cut of meat, one that can often be tough if not prepared correctly, is seared rapidly to seal in moisture and infused ...