Korean BBQ Flank Steak

Immerse your senses in the vibrant flavors of Asia with this exquisite Korean Grilled Flank Steak recipe. Cooked to a succulent medium-rare on the BBQ, this dish, featuring a rich and aromatic Asian marinade, is destined to become an instant family favorite and a staple in your culinary repertoire.

The secret lies in the masterful blend of Asian ingredients, meticulously crafted to permeate every fiber of the meat. This infusion of flavor transforms a simple cut into an absolutely irresistible Korean Beef experience, promising a taste adventure that’s both deeply satisfying and remarkably easy to prepare.

Korean Beef grilled and sliced on a white dinner plate.

Why This Korean Grilled Flank Steak Will Become Your Go-To Recipe

Grilling isn’t just a summer pastime in our household; it’s a year-round passion. From juicy burgers to perfectly charred chicken and chops, our grill is always ready for action. There’s something undeniably satisfying about cooking outdoors, no matter the season. One memorable winter, my husband and youngest son even brought our hefty Big Green Egg indoors when its lid froze shut – a testament to their grilling dedication!

This dedication extends to finding and perfecting recipes that truly shine on the grill. And that’s precisely where this Korean Grilled Flank Steak comes in. Here’s why you absolutely need to make it:

  • Elevate a Family Favorite: Flank steak is inherently versatile and budget-friendly, making it a frequent choice for many families. However, without proper seasoning, it can sometimes be a bit bland. This recipe elevates it from ordinary to extraordinary.
  • Flavor Infusion Masterclass: A truly great marinade doesn’t just coat the meat; it penetrates deeply, imparting complex flavors and tenderizing the muscle fibers. Our Asian marinade does precisely this, transforming a humble flank steak into a spectacular, restaurant-quality entree.
  • Harmonious Asian Flavors: The specific combination of soy sauce, fresh ginger, sesame oil, and sriracha creates a marinade that complements beef beautifully. It’s a symphony of umami, spice, and aromatic freshness that excites the palate without overpowering the natural taste of the meat.

The marinade’s marvelous punch of flavor, thanks to the freshly grated ginger, savory soy, and fiery sriracha, is simply unparalleled. You have full control over the spice level – easily tone it down for a milder taste or amp it up for those who crave extra heat by adjusting the sriracha amount. Regardless of your preference, this Korean Grilled Flank Steak stands out as a perfect entree for any gathering, be it a casual summer BBQ or a special dinner.

Mastering the Grill: Expert Tips for Perfect Korean Flank Steak

Achieving a perfectly grilled flank steak requires a few key insights. This lean cut, sourced from the cow’s abdominal muscles, can become tough and chewy if not prepared correctly. Follow these expert tips to ensure your Korean Grilled Flank Steak is tender, juicy, and packed with flavor:

  • Understanding Flank Steak: Due to its lean nature and fibrous texture, flank steak benefits immensely from marination and proper slicing. It’s a flavorful cut, but needs a little help to reach its full potential tenderness.
  • PRO-Tip: The Power of Overnight Marinating: Beef is robust and can handle extended marinating times without becoming mushy. Unlike more delicate meats like fish or chicken, flank steak thrives on a long soak. For optimal flavor penetration and tenderization, aim to marinate it overnight. This allows the Asian ingredients ample time to work their magic, breaking down tougher fibers and infusing the meat with incredible taste.
  • Effortless Marination Technique: Combine all your marinade ingredients in a gallon-sized Ziploc bag. Give it a good shake to ensure everything is well mixed. Then, add your flank steak, remove any excess air from the bag, and seal it. Place the bag on a plate (just in case of any leaks) and refrigerate. Marinate for at least 2 hours, but ideally overnight for the best results.
  • PRO-Tip: Slicing Against the Grain for Tenderness: This is arguably the most crucial step for ensuring a tender flank steak. Flank steak has prominent muscle fibers that run in one direction – this is called “the grain.” If you slice with the grain, you’ll end up with long, chewy strands of meat. Instead, always slice *perpendicular* to these lines, from one long side of the steak to the other.
  • Visualizing the Cut: Before you even start slicing, take a moment to observe your flank steak. You’ll clearly see the distinct “lines” of muscle fibers running across it. Your goal is to cut *across* these lines at an angle. Cutting thin slices (about ¼ inch thick) across the grain shortens the muscle fibers, making each bite significantly more tender and enjoyable. It truly makes a huge difference in the eating experience!
  • PRO-Tip: Avoid Overcooking at All Costs: Overcooked flank steak is tough flank steak. Period. We highly recommend cooking it to rare or medium-rare for the most tender and flavorful results. To achieve this precision, always use a reliable instant-read meat thermometer. Pull the steak off the grill when its internal temperature is approximately 5-10°F below your desired final doneness.
  • The Phenomenon of Carryover Cooking: Even after removing your steak from the grill, its internal temperature will continue to rise for several minutes. This is known as “carryover cooking.” By pulling it off slightly early, you prevent it from overcooking during this resting period, ensuring it reaches your perfect desired doneness.
  • PRO-Tip: The Indispensable Resting Period: Once off the grill, transfer your flank steak to a cutting board and loosely cover it with aluminum foil. Let it rest for a full 10 minutes before slicing. This resting time is vital! It allows the juices, which have migrated to the center of the steak during cooking, to redistribute throughout the meat. Skipping this step means the juices will simply pool on your platter when you cut into it, leaving you with a drier steak. Resting ensures every slice is moist, tender, and incredibly flavorful.
Korean Beef Recipe sliced and plated with sugar snap peas and tomatoes.

Complementing Your Korean Grilled Flank Steak

When you’ve prepared such a flavorful and aromatic entree as this marinated flank steak, your side dishes should complement, not compete. The rich Asian flavors of the beef stand beautifully on their own, allowing for simple yet elegant accompaniments. Here are some ideal serving suggestions to complete your meal:

  • Fresh Green Salad: A crisp green salad provides a refreshing counterpoint to the savory steak. Consider a simple mix of fresh greens with a light vinaigrette, or try a vibrant apple-cherry-walnut salad with maple dressing for a touch of sweetness and crunch.
  • Seasonal Vegetables: Lightly cooked or roasted seasonal vegetables add color, texture, and nutrients without overwhelming the main dish. Garlic Parmesan roasted green beans, steamed sugar snap peas (as pictured), or stir-fried broccoli would all be excellent choices.
  • Starchy Sides: To round out the meal, a classic starch is always welcome. Steamed jasmine rice, fluffy white rice, or even a flavorful cheesy spinach rice casserole will beautifully soak up any leftover marinade juices. For a heartier option, consider creamy cream cheese mashed potatoes.

Every time we serve this Korean Beef, it disappears quickly! There’s rarely a mention of the heat from the sriracha, the Asian chili-laced condiment, as the flavors are so well balanced. Trust me, this is hands down one of the best flank steak marinades you will ever try! Its versatility is also remarkable. A friend of mine regularly uses this very marinade on chicken and steelhead trout with fantastic results. I’m excited to try it with salmon next – the possibilities are truly endless!

Optimal Marinating Times for Various Meats and Seafood

The duration for marinating meat and seafood is crucial for both flavor and texture. It varies significantly depending on the type and cut of protein, as well as the acidity of the marinade. While delicate shrimp require minimal time, a robust flank steak benefits from a longer soak. Always marinate in a sturdy Ziploc bag or a non-reactive glass container. Avoid metal containers, as acids in the marinade (like vinegar or citrus juice) can react with certain metals, potentially imparting an off-flavor or even breaking down the container itself. Marinades containing acid will also tenderize the meat more quickly, so pay close attention to the recommended times to avoid a mushy texture.

  • Beef: Cuts like this grilled flank steak can be marinated for an extended period, typically overnight (8-12 hours) for maximum flavor and tenderness. Thinner steaks, such as skirt or sirloin, can be marinated for a shorter duration, usually 2-3 hours.
  • Pork: Chops and tenderloins benefit from 6 hours to overnight marination.
  • Chicken: Boneless, skinless chicken pieces (breasts, thighs) should be marinated for 1½-2 hours. Bone-in chicken can often handle an overnight marination without issue.
  • Lamb: Chops, roasts, or cubes for skewers can be marinated for 6 hours or up to overnight.
  • Shelled Shrimp: Due to their delicate nature and quick cooking time, shrimp only need 30-60 minutes in a marinade. Any longer and the acid can begin to “cook” or denature the protein, leading to a rubbery texture.
  • Salmon: Similar to shrimp, salmon is delicate and benefits from a shorter marination time of 30-60 minutes.
Overhead view of slices of flank steak, sugar snapped peas and a red handle knife.

Frequently Asked Questions About Grilling Flank Steak

How Long Do You Grill Flank Steak?

The grilling time for flank steak is highly dependent on several factors, making it more of an art than a strict science. First, consider the weight and thickness of your specific cut of meat; thicker steaks will naturally require more time. Next, the heat of your grill plays a significant role. Gas grills offer consistent, adjustable heat, while charcoal grills can fluctuate more, requiring careful management. The initial temperature of your steak also matters: for more even cooking, it’s recommended to let your flank steak sit on the countertop at room temperature for about an hour before grilling to take the chill off. Finally, your personal preference for doneness (rare, medium-rare, medium, or well-done) will dictate the total grilling time.

Typically, flank steak takes about 4-5 minutes per side for medium-rare, but it’s essential to rely on an instant-read thermometer for accuracy. PRO-Tip: Always rest your grilled beef, covered loosely with foil, for about 10 minutes before serving. This crucial step allows the meat to reabsorb its flavorful juices, ensuring a tender and moist result. Furthermore, resting contributes to “carryover cooking,” where the internal temperature continues to rise by about 5-10 degrees. For this reason, it’s best to pull your flank steak off the grill when it’s approximately 5-10 degrees Fahrenheit *under* your target internal temperature.

What Are the Optimal Internal Temperatures for Grilled Beef?

Using a meat thermometer is the most reliable way to ensure your grilled flank steak reaches your preferred level of doneness. Remember to account for carryover cooking (an additional 5-10°F after resting):

  • Rare – Cool red center: Pull off at 120-125°F (final 125-130°F)
  • Medium Rare – Warm red center: Pull off at 125-130°F (final 135-140°F)
  • Medium – Warm pink center: Pull off at 135-140°F (final 145-150°F)
  • Medium Well – Slightly pink center: Pull off at 140-145°F (final 150-155°F)
  • Well Done – Little or no pink: Pull off at 150-155°F (final 160°F+) (While not recommended for flank steak due to potential toughness, this is achievable if preferred. My dad always liked his beef well-done, so we certainly cooked it that way for him!)

Explore More Delicious Beef Recipes

If you loved this Korean Grilled Flank Steak, you’re sure to enjoy these other fantastic beef creations and grilling guides:

  • Stuffed Flank Steak from Diethood: An impressive way to prepare flank steak with a savory filling.
  • Beef Bulgogi: Another one of our favorite Asian beef recipes, offering a different but equally delicious flavor profile.
  • Flank Steak Roulades: Elegant and flavorful beef rolls perfect for a special occasion.
  • Beef Sushi Rolls: A creative and fun way to enjoy beef in a sushi-inspired format.
  • Easy Grilled Flank Steak: A simpler approach for when you want deliciousness with minimal fuss.
  • How to Grill a Perfect Steak: Master the art of grilling any steak to perfection.
  • Soy, Orange Juice, and Red Wine Marinade: Discover another versatile marinade for your grilling adventures.
  • Browse more of the Best Beef Recipes for endless culinary inspiration.

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Korean grilled flank steak and sugar snap peas on a white dinner plate

The Recipe:

Korean Grilled Flank Steak

Prep Time
5 minutes
Cook Time
10 minutes
Total Time
15 minutes
Yield
4 servings

A simple Asian marinade transforms a flank steak into a fabulous entree that’s perfect for any occasion!

Rated 5 out of 5 stars by 16 reviewers

Ingredients

  • ½ cup soy sauce
  • ¼ cup rice wine vinegar
  • ½ bunch green onions (finely chopped)
  • 2 tablespoons grated fresh ginger
  • 1 tablespoon toasted sesame oil
  • 1 ½ teaspoons sriracha chili paste or sauce
  • 1 flank steak, 2 pounds
  • Freshly ground black pepper to taste

Instructions

  1. Combine all marinade ingredients (soy sauce, rice wine vinegar, green onions, ginger, sesame oil, and sriracha), and mix well in a bowl until fully incorporated.
  2. Pour the prepared marinade into a large, sturdy ziplock bag. Add the flank steak, ensuring it is fully submerged in the marinade. Seal the bag, removing as much excess air as possible, and place it on a plate in the refrigerator. Marinate for a minimum of 2 hours, or for best results, marinate up to overnight (8-12 hours).
  3. Prepare your grill for medium-high heat. Carefully remove the steak from the marinade, discarding any remaining marinade. Pat the steak dry with paper towels; this helps achieve a better sear on the grill. Sprinkle generously with freshly ground black pepper to taste.
  4. Place the seasoned flank steak on the preheated grill. Grill to your desired doneness, with medium-rare typically being preferred for tenderness, which usually takes about 3-4 minutes per side. Use an instant-read meat thermometer to check for internal temperature, aiming for 5-10 degrees below your target doneness due to carryover cooking.
  5. Once cooked, transfer the flank steak to a clean cutting board. Loosely tent it with aluminum foil and let the meat rest for approximately 10 minutes. This resting period is crucial as it allows the juices to redistribute throughout the steak, ensuring a more tender and juicy result. After resting, slice the steak thinly against the grain before serving.

Notes

Adapted from Amerianprofile.com. Total time listed does not include the essential marinating time.

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Nutrition Information:

Yield:

4

Serving Size:

1

Amount Per Serving:
Calories: 112Total Fat: 5gSaturated Fat: 1gTrans Fat: 0gUnsaturated Fat: 4gCholesterol: 17mgSodium: 2039mgCarbohydrates: 7gFiber: 1gSugar: 3gProtein: 9g

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© Liz Berg

Cuisine: American

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Category: Beef