Portasaurus I need your help.

[Bardalicious]

First off, if you're rubbing and grilling, it's not a "London Broil". Perhaps you bought it from the butcher or store labeled as such, perhaps not. If you have, they've likely just sold you a plain old flank steak.

Typically the name refers to a flank steak that has been marinated and grilled or broiled. The act of marination is key as it tenderizes this otherwise rather tough cut of meat.

Google is your friend for finding specific recipes. Good luck!