If you’ve got a London broil ready for your charcoal grill, you probably want to know the perfect cooking time to get it just right. Too long, and it turns tough; too short, and it might be undercooked.
You want juicy, flavorful meat that will impress everyone at your next cookout. In this guide, you’ll discover exactly how long to cook London broil on a charcoal grill so you can enjoy that perfect balance of tenderness and smoky flavor every time.
Keep reading—your taste buds will thank you.
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Choosing The Right Cut
Choosing the right cut of London Broil affects cooking time and flavor on a charcoal grill.
Knowing what to look for helps you get the best results for your barbecue.
Selecting Quality London Broil
Look for cuts labeled as London Broil or flank steak at the store. Fresh meat should be bright red and firm. Avoid cuts that look dark or feel sticky.
- Choose cuts with no unpleasant smell
- Pick pieces with a consistent thickness
- Look for a smooth surface without tears or holes
Marbling And Thickness Tips
Marbling means the small white lines of fat inside the meat. This fat adds flavor and keeps the meat juicy during grilling.
| Marbling Level | Effect on Cooking | Recommended Thickness |
| Low | Less juicy, leaner taste | At least 1 inch |
| Medium | Good flavor and tenderness | 1 to 1.5 inches |
| High | Very juicy and rich taste | 1.5 inches or more |
Preparing The Grill
Cooking London Broil on a charcoal grill needs careful preparation. Getting the grill ready ensures even cooking and great flavor.
Focus on setting up charcoal correctly and controlling the grill temperature. These steps help cook the meat perfectly.
Setting Up Charcoal For Even Heat
Arrange your charcoal to create two heat zones. This method cooks the London Broil evenly.
- Light a full chimney of charcoal.
- Spread half the hot coals on one side of the grill.
- Leave the other side empty for indirect heat.
- Place a drip pan under the grill grate on the cooler side.
- Keep the grill lid open until the coals turn gray and ashy.
Managing Grill Temperature
Keep the grill temperature steady between 350°F and 400°F. This range cooks the steak well without burning.
| Temperature Range | Purpose |
| 350°F – 400°F (177°C – 204°C) | Ideal for even cooking and good sear |
| Below 350°F (177°C) | Slower cooking, less sear |
| Above 400°F (204°C) | Risk of burning outside, raw inside |
Marinating And Seasoning
Marinating and seasoning are key to great flavor when cooking London Broil on a charcoal grill. These steps help tenderize the meat and add deep taste.
Choosing the right marinade and seasoning method will make your London Broil juicy and delicious every time.
Best Marinades For Flavor
Marinades add moisture and flavor to London Broil. Acidic ingredients help break down the tough fibers in the meat.
- Use soy sauce for a salty, savory base.
- Add vinegar or lemon juice to tenderize.
- Include garlic and herbs for aroma and taste.
- Mix olive oil to keep the meat moist.
- Marinate for at least 4 hours or overnight for best results.
Seasoning Techniques
Seasoning the London Broil properly enhances its natural flavor. Simple salt and pepper work well but you can add more spices for variety.
| Seasoning | Effect |
| Salt | Draws out moisture and enhances flavor |
| Black Pepper | Adds a mild heat and sharpness |
| Garlic Powder | Gives a rich, savory taste |
| Onion Powder | Adds sweetness and depth |
| Smoked Paprika | Gives a smoky aroma and color |
Cooking Times For London Broil
London broil is a flavorful cut that cooks well on a charcoal grill. Knowing the right cooking time helps get the perfect doneness.
This guide covers cooking times for rare, medium, and well-done London broil. It also explains how to use a meat thermometer.
Grill Time For Rare
For rare London broil, grill the meat for about 4 to 5 minutes per side. The internal temperature should reach 125°F (52°C).
- Preheat charcoal grill to medium-high heat
- Place London broil on grill
- Cook 4 to 5 minutes on each side
- Check internal temperature with a meat thermometer
- Remove from grill at 125°F for rare
Grill Time For Medium
Medium London broil needs about 6 to 7 minutes per side. Aim for an internal temperature of 135°F (57°C) for perfect doneness.
| Doneness | Cooking Time (minutes per side) | Internal Temperature |
| Rare | 4 to 5 | 125°F (52°C) |
| Medium | 6 to 7 | 135°F (57°C) |
| Well-Done | 8 to 10 | 155°F (68°C) |
Grill Time For Well-done Using A Meat Thermometer
Cook well-done London broil for 8 to 10 minutes per side. Use a meat thermometer to check the temperature reaches 155°F (68°C).
Tips for using a meat thermometer:
- Insert the thermometer into the thickest part of the meat.
- Avoid touching bone or fat for an accurate reading.
- Check temperature near the end of the cooking time.
- Remove meat from grill once target temperature is reached.
Grilling Techniques
Cooking London Broil on a charcoal grill needs the right techniques. Using the right heat and timing helps get juicy results.
These tips cover how to use direct and indirect heat. Plus, you will learn the best flipping and resting ways.
Direct Vs Indirect Heat
Direct heat means placing the meat right over the hot coals. This cooks the outside fast and gives a nice crust.
Indirect heat means putting the meat beside the coals. It cooks slower and helps avoid burning.
- Use direct heat to sear the London Broil for 4-5 minutes each side.
- Move the meat to indirect heat to finish cooking.
- Indirect heat keeps the inside tender and juicy.
Flipping And Resting Tips
Flip the London Broil only once or twice. Too much flipping stops a good crust from forming.
Rest the meat for 10 minutes after grilling. This helps the juices spread inside the meat.
- Flip once after 4-5 minutes of searing.
- Turn again if needed during indirect cooking.
- Let the meat rest on a plate covered loosely with foil.
- Resting keeps the meat moist and tender.
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Serving Suggestions
London broil tastes best when served with the right sides and sliced properly. These tips help you enjoy your charcoal-grilled steak fully.
Proper slicing and side dishes make a big difference. Let’s explore how to prepare and serve London broil for a great meal.
Slicing Against The Grain
Cutting London broil against the grain makes the meat more tender and easier to chew. Look closely at the meat fibers and slice perpendicular to them. This breaks up the muscle strands.
- Identify the grain direction on the steak.
- Use a sharp knife for clean cuts.
- Cut thin slices for better tenderness.
- Serve slices immediately for best texture.
Side Dishes To Complement
London broil pairs well with many side dishes. Choose sides that balance the rich flavor of grilled beef. Vegetables, starches, and sauces add variety and freshness.
| Side Dish | Description | Why It Works |
| Grilled Asparagus | Lightly charred, crunchy stalks | Adds a fresh, crisp texture |
| Garlic Mashed Potatoes | Creamy and smooth with garlic flavor | Balances meat with creamy richness |
| Roasted Brussels Sprouts | Caramelized and slightly sweet | Provides a savory, slightly bitter contrast |
| Caesar Salad | Crisp romaine with tangy dressing | Offers a refreshing and light side |
| Chimichurri Sauce | Herb and garlic based sauce | Brightens and adds flavor to the beef |
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Frequently Asked Questions
How Long Does It Take To Grill London Broil?
Grilling London Broil typically takes about 15-20 minutes. The exact time depends on your desired doneness. For medium-rare, aim for an internal temperature of 130-135°F. Always use a meat thermometer for accuracy. Let the meat rest for 5-10 minutes before slicing.
What Temperature Should London Broil Be Grilled At?
Grill London Broil over medium-high heat, around 400-450°F. This temperature sears the meat perfectly. It ensures a juicy interior and a flavorful crust. Use a meat thermometer to check the internal temperature. Achieving the right temperature is crucial for the best grilling results.
How Do You Know When London Broil Is Done?
Use a meat thermometer to check doneness. For medium-rare, the internal temperature should be 130-135°F. The meat should feel firm but slightly springy. Let it rest for 5-10 minutes after grilling. This ensures juices redistribute, making it tender and flavorful.
Should I Marinate London Broil Before Grilling?
Yes, marinating is recommended for London Broil. It enhances the flavor and tenderizes the meat. A marinade of olive oil, vinegar, and herbs works well. Marinate for at least 2-4 hours, or overnight for best results. This step can significantly improve the taste and texture.
Conclusion
Grilling London Broil on charcoal takes careful timing. Cook it about 4 to 6 minutes per side for medium-rare. Let the meat rest before slicing to keep it juicy. Use a meat thermometer to check the temperature. Aim for 130°F to 135°F for best results.
With these tips, your London Broil will taste tender and smoky. Enjoy your grilled meal with simple sides. Charcoal grilling adds rich flavor that’s hard to beat. Give it a try and savor the difference.