[header] How to make london broil [title] Mix ingredients in a large bowl. [step] Using a whisk or fork, mix your salt, pepper, vinegar, soy sauce, brown sugar, garlic, and optional ingredients in a large mixing bowl. Incorporate all of the ingredients together and break up any large chunks of brown sugar.
[title] Pierce or score the london broil with a fork. [step] Pierce the top of the meat 3-6 times before putting it into the marinade.