How to Cook a 2 Pound London Broil

London broil is a lean beef cut, often top round or flank steak, prized for its bold flavor when marinated and cooked properly. A 2-pound London broil requires precise timing based on weight to achieve tenderness without toughness. This guide covers oven roasting, grilling, and broiling methods, with unit conversions for international recipes—such as pounds to kilograms or Fahrenheit to Celsius.

Understanding Key Units and Timing

Cooking time for London broil is typically calculated per pound: 20–25 minutes per pound at 400°F (204°C) for medium-rare (internal temperature 135°F/57°C). A 2-pound cut thus needs 40–50 minutes total roasting time, plus resting.

• Pounds to kilograms:2 lb = 0.907 kg (useful for metric recipes).
• Fahrenheit to Celsius:Oven: 400°F = 204°C; Internal: 135°F = 57°C.
• Thickness matters:Aim for 1.5–2 inches thick; convert inches to cm (3.8–5.1 cm) if scaling.

Conversion formula for cooking time:Total time (min) = Weight (lb) × Minutes per lb. Adjust for desired doneness: rare (125°F/52°C), medium (145°F/63°C), well (160°F/71°C).

Step-by-Step Oven Roasting (Recommended for Beginners)

1. Marinate:Combine ½ cup soy sauce, ¼ cup olive oil, 3 garlic cloves (minced), 2 tbsp Worcestershire sauce, and 1 tsp black pepper. Marinate 2-pound London broil for 4–24 hours in fridge. (Scale liquids by weight: 1 oz per lb ≈ 30 ml/kg.)
2. Preheat oven:400°F (204°C). Pat meat dry; season with salt.
3. Sear:Heat cast-iron skillet over high heat with 1 tbsp oil. Sear 3–4 minutes per side for crust.
4. Roast:Transfer to oven. Cook 20–25 minutes per pound (40–50 minutes total for 2 lb). Use meat thermometer.
5. Rest and slice:Tent with foil 10 minutes. Slice thinly against grain at 45° angle.

Yield:Serves 4–6; 4–6 oz per serving (113–170 g).

Grilling or Broiling Alternatives

Grill:Medium-high heat (375–450°F/190–232°C). Grill 5–7 minutes per side per pound (20–28 minutes total), flipping once. Indirect heat for thicker cuts.

Broil:Position rack 4–6 inches (10–15 cm) from heat. Broil 5 minutes per side per pound, watching closely to avoid charring.

Pro tip: Convert BTU for grill (1 lb meat ≈ 100–150 BTU/min indirect) if engineering precise heat output.

Practical Applications and Common Mistakes

In home cooking, weight-based timing prevents overcooking tough cuts. For researchers or students scaling recipes (e.g., 2 lb to 5 lb), multiply time proportionally and convert units accurately. Engineers might apply this to industrial food processing, where precise mass-to-time ratios optimize energy use.

Avoid these errors:

• Ignoring weight: A 1.5 lb cut cooks faster (30–37 minutes).
• No thermometer: Eyeballing leads to dry meat.
• Skipping rest: Juices redistribute during 10-minute rest.
• Wrong slice: With-grain cuts chew like leather.

Quick Reference Table

To cook a 2-pound London broil perfectly, focus on marinating, weight-timed cooking, and resting. Experiment with methods for your setup. For instant unit conversions—like pounds to kg or temps—use the free tool at HowToConvertUnits.com.