Cup of Yum
1. Add the chili peppers, garlic, soy sauce, vinegar, olive oil, sugar and seasonings to a food processor. Process until very smooth.
2. Score the London Broil on both sides with a crosshatching pattern, about ¼ inch deep to allow the marinade to penetrate the meat.
3. Add the meat to a large baggie or into a wide dish and pour the marinade over it. Rub the marinade into the meat and cover.
4. Refrigerate and marinate the meat at least 6 hours, though it is best to marinade overnight for better flavor.

FOR GRILLED LONDON BROIL

Cup of Yum
1. Heat a grill to medium-high heat. Very lightly oil the grates.
2. Grill the London Broil for 5 minutes, then flip and grill another 5 minutes.
3. Check the temperature. You’ll want 125 degrees F internally for medium-rare or 130 degrees F for medium. Continue to grill and flip until you reach your desired temperature, up to 20 minutes TOPS.
4. Rest for 10 minutes, then slice up against the grain and serve.

FOR BROILED LONDON BROIL

1. Heat your oven to broil.
2. Broil the London Broil for 6-7 minutes, then flip and broil another 5 minutes, or until it reaches an internal temperature of 125 degrees F for medium-rare.
3. Rest for 10 minutes, then slice up against the grain and serve.