How Long to Cook a London Broil on the Grill?
For a perfectly grilled London Broil, aim for approximately 4-6 minutes per side over medium-high heat for medium-rare (130-135°F internal temperature), adjusting based on thickness and desired doneness. Remember that a good meat thermometer is essential.
What is London Broil, Anyway?
London Broil isn’t actually a specific cut of beef, but rather a cooking method applied to tougher cuts, most commonly flank steak or top round. Its name is misleading, as it’s an American creation and not particularly popular in London. The hallmark of a successful London Broil is a flavorful, tenderized piece of meat, achieved through proper marinating and cooking to medium-rare. This approach transforms an otherwise challenging cut into a delicious meal.
Why Grill London Broil?
Grilling a London Broil offers several advantages over other cooking methods:
- Intense Flavor: The high heat of the grill sears the outside, creating a delicious crust and smoky flavor that’s hard to replicate indoors.
- Quick Cooking: Grilling is a relatively quick way to prepare London Broil, making it a great option for busy weeknights.
- Healthy Option: Grilling allows fat to drip away, making it a healthier alternative to pan-frying.
- Versatile: London Broil is incredibly versatile and can be paired with a variety of sides and sauces.
The London Broil Grilling Process: Step-by-Step
Follow these steps to achieve grilling perfection:
- Choose Your Cut: Opt for flank steak or top round. Look for a cut with good marbling, which will contribute to flavor and tenderness.
- Marinate: Marinating is crucial for tenderizing London Broil. Use an acidic marinade (containing vinegar, citrus juice, or wine) for at least 2 hours, or ideally overnight.
- Prepare the Grill: Preheat your grill to medium-high heat (approximately 400-450°F). Clean the grates thoroughly and lightly oil them to prevent sticking.
- Grill the London Broil: Place the London Broil on the hot grill and cook for 4-6 minutes per side for medium-rare. Use a meat thermometer to check the internal temperature.
- Rest the Meat: Remove the London Broil from the grill and let it rest for at least 10 minutes before slicing. This allows the juices to redistribute, resulting in a more tender and flavorful steak.
- Slice Against the Grain: Slice the London Broil thinly against the grain to maximize tenderness.
Achieving the Perfect Marinade
A good marinade is the secret weapon for transforming a tougher cut like London Broil. A basic marinade should include:
- Acid: Tenderizes the meat (e.g., vinegar, lemon juice, lime juice, wine)
- Oil: Helps distribute flavors and prevent sticking
- Flavorings: Adds flavor (e.g., garlic, herbs, spices, Worcestershire sauce, soy sauce)
Experiment with different flavor combinations to create your perfect marinade! A few suggested combinations are:
- Classic: Balsamic vinegar, olive oil, garlic, rosemary, thyme
- Asian-inspired: Soy sauce, ginger, garlic, sesame oil, brown sugar
- Spicy: Chili powder, cumin, paprika, oregano, olive oil, lime juice
Common Mistakes to Avoid
Several pitfalls can ruin your London Broil experience:
- Skipping the Marinade: Neglecting to marinate will result in a tough and flavorless steak.
- Overcooking: London Broil is best served medium-rare. Overcooking will make it dry and tough.
- Not Resting the Meat: Resting the meat is essential for allowing the juices to redistribute, resulting in a more tender steak.
- Slicing with the Grain: Slicing with the grain will make the steak tough and chewy.
Doneness Temperatures Guide
| Doneness | Internal Temperature |
|---|---|
| Rare | 120-130°F |
| Medium-Rare | 130-135°F |
| Medium | 135-145°F |
| Medium-Well | 145-155°F |
| Well-Done | 155°F+ |
Choosing the Right Grill
While both gas and charcoal grills can be used to cook London Broil, they each offer distinct advantages.
- Gas Grill: Offers more precise temperature control and faster preheating. Ideal for quick and easy weeknight meals.
- Charcoal Grill: Imparts a smoky flavor that’s difficult to replicate with a gas grill. Requires more time and effort to preheat, but can result in a more authentic grilling experience.
Frequently Asked Questions
How do I know when my London Broil is done?
The most reliable way to determine doneness is to use a meat thermometer. Insert the thermometer into the thickest part of the steak, avoiding bone or fat. Cook to your desired internal temperature. Remember, the temperature will continue to rise slightly after you remove the steak from the grill.
Can I use a different cut of meat for London Broil?
While flank steak and top round are the most common choices, other tougher cuts like skirt steak or sirloin flap can also be used. Just be sure to marinate them well to tenderize them.
How long should I marinate my London Broil?
The ideal marinating time is overnight, or at least 2 hours. Longer marinating times allow the marinade to penetrate deeper into the meat, resulting in a more flavorful and tender steak.
What temperature should my grill be for London Broil?
Aim for medium-high heat, around 400-450°F. This will allow you to sear the outside of the steak while cooking it to the desired internal temperature.
Should I close the grill lid while cooking London Broil?
Closing the grill lid will help to distribute the heat more evenly and cook the steak faster. However, be sure to monitor the internal temperature closely to avoid overcooking.
How do I prevent my London Broil from sticking to the grill?
Make sure your grill grates are clean and well-oiled before placing the steak on the grill. You can also lightly oil the steak itself.
Can I use a cast iron skillet on the grill for London Broil?
Yes, a cast iron skillet can be a great option for grilling London Broil, especially if you want to create a crispy sear. Preheat the skillet on the grill before adding the steak.
How should I store leftover London Broil?
Store leftover London Broil in an airtight container in the refrigerator for up to 3-4 days.
How can I reheat leftover London Broil without drying it out?
The best way to reheat London Broil is to slice it thinly and gently warm it in a skillet with a little olive oil or broth. Avoid overcooking, which will dry it out.
What are some good side dishes to serve with London Broil?
London Broil pairs well with a variety of side dishes, including:
- Grilled vegetables (asparagus, zucchini, bell peppers)
- Roasted potatoes
- Mashed potatoes
- Salad
- Rice
Can I freeze London Broil?
Yes, you can freeze London Broil, either before or after cooking. Wrap it tightly in plastic wrap and then in foil to prevent freezer burn.
What’s the best way to slice London Broil for salads or sandwiches?
Always slice against the grain for the most tender results. For salads or sandwiches, aim for very thin slices.