How To Grill Swordfish Steaks | Juicy & Delicious

Grilling swordfish steaks requires careful preparation and precise temperature control for a firm, flaky, and moist result.

Swordfish, with its meaty texture and mild flavor, stands out as an excellent choice for the grill. Its density holds up beautifully to high heat, developing a lovely char without falling apart, much like a good steak. Mastering a few key techniques ensures a delicious outcome every time, transforming a simple piece of fish into a memorable meal.

Selecting the Best Swordfish Steaks

The foundation of any great grilled dish begins with quality ingredients. For swordfish, this means paying close attention to visual cues and thickness.

Identifying Quality

Look for swordfish steaks that are firm, moist, and have a translucent, almost pearlescent sheen. The flesh should be a pale pinkish-white to off-white color, free from any discoloration or strong fishy odor. Avoid steaks that appear dry, dull, or have gaping flesh, as these indicate a lack of freshness. Fresh swordfish often has a subtle, clean ocean scent.

Proper Thickness

Ideal swordfish steaks for grilling are between 1 to 1.5 inches thick. This thickness allows for a beautiful sear on the exterior while keeping the interior moist and tender. Thinner steaks cook too quickly, risking dryness, while thicker steaks might burn on the outside before the inside reaches proper doneness. Consistent thickness across the steak ensures even cooking.

Preparing Your Swordfish for the Grill

Proper preparation is a critical step in achieving a perfectly grilled swordfish steak. This includes temperature acclimation, thorough drying, and thoughtful seasoning.

Patting Dry and Seasoning

Remove swordfish steaks from the refrigerator about 15-20 minutes before grilling. This allows them to come closer to room temperature, promoting more even cooking. Pat each steak thoroughly dry on all sides with paper towels. Excess moisture on the surface hinders the development of a desirable crust, essentially steaming the fish instead of searing it. Once dry, season generously with kosher salt and freshly ground black pepper. A simple seasoning highlights the swordfish’s natural flavor.

Oil Application

Brush a light, even layer of olive oil directly onto the seasoned swordfish steaks. This oil serves multiple purposes: it helps prevent sticking to the grill grates, promotes an even sear, and aids in heat transfer. Avoid excessive oil, which can cause flare-ups. For additional flavor, consider incorporating minced garlic, lemon zest, or fresh herbs like oregano or thyme into the oil before brushing. The FDA recommends consuming 8 ounces of seafood per week for adults based on a 2,000 calorie diet.

Mastering Grill Temperatures and Setup

Achieving the right grill temperature and setup is fundamental for grilling swordfish successfully. This ensures even cooking and prevents sticking.

Direct vs. Two-Zone Grilling

For swordfish steaks of 1 to 1.5 inches thick, direct high heat grilling is generally effective. This method involves cooking the fish directly over the heat source. However, for thicker steaks or if you desire more control, a two-zone setup offers flexibility. A two-zone setup involves one side of the grill at high heat and the other at medium-low or off. This allows you to sear the fish over high heat and then move it to the cooler zone to finish cooking without burning.

Achieving Optimal Heat

Preheat your grill to a high temperature, aiming for 450-500°F (232-260°C). Use a reliable grill thermometer to confirm the temperature. Allow the grill to preheat for at least 10-15 minutes to ensure the grates are thoroughly hot. Hot grates are essential for preventing sticking and creating those appealing grill marks.

1. Clean Grates: Before cooking, vigorously clean your grill grates with a sturdy wire brush. Residual food particles cause sticking.
2. Oil Grates: Once clean and hot, lightly oil the grates. Use a folded paper towel dipped in a high-smoke-point oil (like canola or grapeseed), held with tongs, and wipe it across the grates. This creates a non-stick surface.
3. Consistent Heat: Maintain consistent high heat throughout the cooking process. Avoid opening the grill lid unnecessarily, as this causes temperature fluctuations.

How To Grill Swordfish Steaks: Mastering the Flame

Grilling swordfish is a quick process, demanding attention to timing and visual cues to ensure a perfectly cooked steak.

Initial Sear and Flip

Place the seasoned, oiled swordfish steaks directly over the hottest part of the grill. Close the lid to allow the heat to circulate and promote even cooking. Cook for 4-6 minutes without moving the steaks. This initial period is crucial for developing a beautiful, caramelized crust and prominent grill marks. Resist the urge to peek or move the fish prematurely, as this can tear the delicate flesh. After the initial cook time, carefully flip the steaks using a wide, thin spatula. Avoid using tongs, which can damage the steak’s structure. Close the lid again.

Monitoring Internal Temperature

Continue cooking the flipped steaks for another 4-6 minutes, or until the internal temperature reaches 145°F (63°C) at the thickest part. Use an instant-read meat thermometer inserted horizontally into the side of the steak to check for doneness. The flesh should appear opaque and flake easily with a fork, but still retain some moisture. Overcooking will result in dry, tough swordfish. The USDA recommends cooking all finfish to an internal temperature of 145°F (63°C) for food safety.

Achieving Perfect Doneness and Resting

Knowing when your swordfish is perfectly cooked involves both temperature and visual cues. The resting period is just as vital as the cooking itself.

Visual Cues and Texture

Beyond the thermometer, observe the steak’s appearance. The exterior should have a golden-brown char, and the flesh should be opaque throughout. When gently pressed with a fork, the flakes should separate easily. The center should still appear moist, not dry or crumbly. A slight translucency in the very center is acceptable if you prefer your fish slightly less done, but for safety and optimal texture, 145°F is the standard. The texture should be firm but tender, not rubbery or mushy.

The Importance of Resting

Once the swordfish reaches its target internal temperature, remove it from the grill and transfer it to a clean plate. Tent the steaks loosely with aluminum foil. Allow them to rest for 5-7 minutes. Resting allows the internal juices, which have migrated to the center during cooking, to redistribute evenly throughout the steak. This results in a noticeably juicier and more tender final product. Skipping this step can lead to dry fish, as the juices escape when sliced immediately.

Flavor Pairings and Serving Suggestions

Grilled swordfish is versatile, pairing wonderfully with a range of fresh and vibrant accompaniments.

• Lemon and Herbs: A squeeze of fresh lemon juice brightens the flavor, and a sprinkle of fresh parsley, dill, or chives adds a fragrant finish.
• Salsas and Pestos: A fresh tomato salsa, mango salsa, or a vibrant basil pesto complements the mild flavor of swordfish beautifully.
• Grilled Vegetables: Asparagus, zucchini, bell peppers, or corn on the cob grilled alongside the swordfish create a cohesive meal.
• Simple Salads: A light green salad with a vinaigrette or a Mediterranean-inspired cucumber and tomato salad offers a refreshing contrast.
• Grains: Quinoa, couscous, or a light rice pilaf absorb the juices and provide a satisfying base.

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