An acidic marinade breaks ... there's nothing wrong with a hot grill or broiler. This method ensures a lovely, flavorful crust and a juicy center perfect for a London broil with creamy horseradish ...
To cook a steak in the London broil style, you simply use a cut of lean and tough beef (usually a flat cut) which you then marinate before you broil or grill ... so an acidic marinade can help ...