Is it Better to Marinate or Dry Rub Flank Steak?

Flank steak is a highly flavorful and versatile cut of beef that can be transformed into a mouthwatering dish with the right preparation. It’s a popular choice for grilling, broiling, or pan-searing because it cooks quickly and pairs well with a variety of seasonings. But there’s one question that often stumps home cooks and grill enthusiasts alike: Is it better to marinate or dry rub flank steak?

Both marinating and dry rubbing offer their own unique advantages, and each can be the “right” choice depending on your cooking preferences, time, and flavor goals. In this article, we’ll dive into the science behind both methods, break down their pros and cons, and help you decide which technique is best suited for your next flank steak meal. Additionally, we’ll provide a recipe for both marinated and dry-rubbed flank steak, so you can try them out for yourself!

Understanding Flank Steak

Best Method to Cook Flank Steak

Before we delve into the pros and cons of marinating versus dry rubbing, it’s important to understand the nature of flank steak. This cut of beef comes from the cow’s lower chest or abdominal muscles, making it relatively lean compared to other cuts. It’s known for its strong beefy flavor but can be tougher than more marbled cuts of meat like ribeye or New York strip.

Flank steak’s lean composition means that, without proper preparation, it can turn out chewy and tough. However, when it’s treated correctly—whether by marinating, dry rubbing, or slicing it against the grain—it can be a tender, juicy delight. This is why preparation methods like marinating or dry rubbing are so crucial when working with flank steak.

What is Marination?

Marination is a technique that involves soaking the meat in a mixture of liquid ingredients—typically some combination of oil, acid, spices, and herbs. The goal of a marinade is to tenderize the meat while infusing it with flavor.

Common Ingredients in Marinades:

  • Acid: Such as vinegar, lemon juice, or wine, which breaks down muscle fibers.
  • Oil: Usually olive or vegetable oil, which helps the marinade stick to the meat and keeps it moist.
  • Herbs and Spices: Garlic, rosemary, thyme, cumin, and other seasonings add depth to the flavor.
  • Sweeteners: Ingredients like honey, brown sugar, or maple syrup are often included to balance the acidity.

How Does Marination Work?

The acidic component of the marinade is what does the tenderizing work. Acids like vinegar or citrus juice break down tough muscle fibers, making the meat more tender. However, this process isn’t as deep as many people think. Contrary to popular belief, marinades don’t penetrate deeply into the meat. Instead, they mainly affect the surface layer.

What this means for a cut like flank steak is that while the marinade will add flavor and some tenderness to the outer layers, the inside of the meat will remain largely unaffected by the marinade’s ingredients. Nevertheless, the flavor and tenderization benefits of a good marinade can still make a huge difference.


What is a Dry Rub?

Flank Steak Recipes

A dry rub is a mixture of herbs, spices, and sometimes sugar that is applied directly to the meat’s surface. Unlike a marinade, there’s no liquid involved. Dry rubs are designed to sit on the meat’s surface and develop a flavorful crust when the meat is cooked.

Common Ingredients in Dry Rubs:

  • Salt: Helps draw out moisture and concentrates the flavor.
  • Pepper: Adds a bit of heat and sharpness.
  • Paprika: Gives sweetness and a rich color to the meat.
  • Brown Sugar: Adds a hint of sweetness and aids in caramelization.
  • Cayenne or Chili Powder: For those who enjoy some spice.
  • Garlic and Onion Powder: Provide a savory backbone to the rub.

How Does a Dry Rub Work?

A dry rub works by forming a crust on the meat when it’s cooked at high temperatures. The salt in the rub helps to draw out moisture, which evaporates during cooking, leaving behind a flavorful exterior. The sugars in the rub caramelize, forming a crispy, sweet-savory crust that contrasts beautifully with the meat’s juicy interior.

Unlike marinades, dry rubs don’t tenderize the meat. Instead, they enhance the natural texture of the steak while imparting bold flavors to its surface. This makes dry rubs particularly well-suited for high-heat cooking methods like grilling or pan-searing.

Advantages of Marinating Flank Steak

1. Tenderization

One of the primary benefits of marinating flank steak is that it helps to tenderize the meat. The acid in the marinade breaks down the proteins in the meat, which can reduce toughness, especially in lean cuts like flank steak. This is particularly helpful if you’re grilling or broiling the steak, as high-heat cooking can sometimes exacerbate the meat’s toughness.

2. Flavor Infusion

Marinades also provide a great opportunity to infuse the steak with a variety of flavors. Since flank steak is a relatively lean cut, it doesn’t have the marbling that naturally provides flavor in fattier cuts. A well-balanced marinade can introduce layers of complexity to the meat, making it more flavorful overall.

3. Moisture Retention

The oil in the marinade helps to lock in moisture during cooking. This is particularly useful for a lean cut like flank steak, which can dry out easily if overcooked. By marinating the steak, you give it an added layer of protection against the heat, ensuring that the meat remains juicy.

Advantages of Using a Dry Rub on Flank Steak

1. Quick Preparation

If you’re short on time, a dry rub is often the way to go. Unlike marinades, which require several hours to work their magic, a dry rub can be applied just minutes before cooking. This makes it ideal for last-minute meals where you don’t have time to let the steak sit overnight.

2. Flavorful Crust

A dry rub creates a flavorful crust on the steak’s exterior when cooked. The combination of spices, salt, and sugar caramelizes during the grilling or searing process, producing a deliciously crispy texture. This crust provides a contrast to the tender meat inside, making each bite an explosion of flavor and texture.

3. Customization

With dry rubs, the flavor possibilities are virtually endless. You can tailor your rub to fit your taste preferences, whether you like it smoky, spicy, sweet, or savory. This versatility makes dry rubs an appealing choice for people who enjoy experimenting with different flavor profiles.

The Science Behind Marinades vs. Dry Rubs

Marinades: How They Work

As mentioned earlier, marinades use acids to break down muscle fibers, which tenderizes the meat. However, the flavor penetration from a marinade typically doesn’t go very deep. Most of the flavor remains on the surface, but this is often enough to make a significant difference in the final result. That being said, if you leave the meat in a marinade for too long (over 24 hours), the acid can break down the meat too much, resulting in a mushy texture.

Dry Rubs: How They Work

Dry rubs, on the other hand, rely on the Maillard reaction—a chemical reaction between amino acids and reducing sugars that gives browned foods their distinctive flavor. When the rub-coated steak is exposed to high heat, the sugars and spices caramelize, creating a deep, savory flavor that sticks to the surface of the meat. The salt in the rub also helps to draw moisture out of the meat’s surface, which evaporates during cooking, concentrating the flavor.

Best Cooking Methods for Marinated Flank Steak

Marinated flank steak is best suited for cooking methods that use high, direct heat, such as grilling or broiling. These methods will quickly sear the exterior of the meat, locking in the moisture and flavors introduced by the marinade.

1. Grilling

When grilling marinated flank steak, preheat your grill to medium-high heat. Cook the steak for 4-5 minutes per side, depending on the thickness of the cut, for a perfect medium-rare finish.

2. Broiling

If you don’t have access to a grill, broiling is another great option for cooking marinated flank steak. Position the steak on a broiler pan, about 6 inches from the heating element, and broil for 4-5 minutes per side.

After cooking, always let the steak rest for about 5-10 minutes before slicing. This allows the juices to redistribute throughout the meat, ensuring each bite is as juicy as possible.

Best Cooking Methods for Dry Rubbed Flank Steak

Dry-rubbed flank steak also thrives on high-heat cooking methods like grilling or pan-searing. The goal here is to create a crispy, caramelized crust while keeping the interior tender and juicy.

1. Grilling

For a perfectly grilled dry-rubbed flank steak, preheat your grill to high heat. Sear the steak for 3-4 minutes per side for medium-rare. The high heat will caramelize the sugar in the rub and create a crust that adds texture and flavor.

2. Pan-Searing

Pan-searing is another excellent option for dry-rubbed flank steak. Heat a cast-iron skillet over high heat, add a tablespoon of oil, and sear the steak for 3-4 minutes per side. The result is a beautifully seared exterior with a tender, juicy interior.

Recipe: Marinated Flank Steak

Here’s a simple recipe for marinated flank steak that highlights the benefits of using a marinade to tenderize and flavor the meat.

Ingredients:

  • 1.5 pounds flank steak
  • 1/4 cup olive oil
  • 2 tablespoons soy sauce
  • 2 tablespoons balsamic vinegar
  • 2 cloves garlic, minced
  • 1 tablespoon honey
  • 1 teaspoon Dijon mustard
  • Salt and pepper to taste

Instructions:

  1. In a medium bowl, whisk together the olive oil, soy sauce, balsamic vinegar, garlic, honey, mustard, salt, and pepper.
  2. Place the flank steak in a resealable plastic bag or a shallow dish and pour the marinade over it. Seal the bag or cover the dish and refrigerate for at least 2 hours, or overnight for best results.
  3. Preheat your grill to medium-high heat.
  4. Remove the steak from the marinade and pat it dry with paper towels.
  5. Grill the steak for 4-5 minutes per side for medium-rare, or longer if you prefer your steak more well-done.
  6. Let the steak rest for 5-10 minutes before slicing against the grain.

Recipe: Dry Rubbed Flank Steak

Here’s a recipe for dry-rubbed flank steak that will give you a flavorful, crispy crust without the need for marination.

Ingredients:

  • 1.5 pounds flank steak
  • 2 tablespoons brown sugar
  • 1 tablespoon paprika
  • 1 tablespoon garlic powder
  • 1 tablespoon onion powder
  • 1 teaspoon cayenne pepper
  • 1 tablespoon salt
  • 1 teaspoon black pepper

Instructions:

  1. In a small bowl, mix together the brown sugar, paprika, garlic powder, onion powder, cayenne pepper, salt, and black pepper.
  2. Rub the spice mixture evenly over both sides of the flank steak.
  3. Let the steak sit at room temperature for 30 minutes, or refrigerate for up to 24 hours.
  4. Preheat your grill to high heat.
  5. Grill the steak for 3-4 minutes per side for medium-rare, or longer if desired.
  6. Let the steak rest for 5-10 minutes before slicing against the grain.

FAQs

Can you over-marinate steak?
Yes, if you marinate steak for too long, the acid in the marinade can break down the meat too much, resulting in a mushy texture. For flank steak, marinate for no more than 24 hours.

How long should you apply a dry rub before cooking?
A dry rub can be applied just before cooking, but letting it sit for at least 30 minutes to an hour will allow the flavors to better adhere to the surface of the meat.

What is the best cooking temperature for flank steak?
Flank steak should be cooked to an internal temperature of 130°F for medium-rare. Use a meat thermometer to ensure accuracy.

Which method is better for indoor cooking methods like pan-searing?
Both methods work well for pan-searing, but dry rubs tend to create a better crust when using a high-heat method like pan-searing.

Conclusion: Marinating vs. Dry Rub – Which is Better?

Ultimately, the choice between marinating and dry rubbing comes down to personal preference and time. If you’re looking for tenderization and flavor infusion, marinating is the better option. However, if you prefer bold, concentrated surface flavors and a crispy crust, dry rubbing is the way to go.

Both methods offer unique benefits and can yield delicious results when used properly. Experiment with both techniques to see which you prefer, and enjoy your perfectly cooked flank steak!

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