A piquant salsa pairs nicely with a meaty swordfish steak

This undated photo provided by America's Test Kitchen in August 2018 shows grilled swordfish steaks with salsa verde in Brookline, Mass. This recipe appears in the cookbook “Master of the Grill.” (Daniel J. van Ackere/America's Test Kitchen via AP)
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Swordfish steaks are a favorite on the grill. Their dense, meaty flesh keeps the steaks from falling apart. When developing our recipe, our first step was to choose thicker steaks, since thinner steaks overcooked easily. Since they can stay on the grill longer, the thicker steaks also pick up more smoky flavor.

Grilled Swordfish Steaks with Salsa Verde

Servings: 4

Start to finish: 1 hour

Because of the shape and size of swordfish, individual steaks are quite large. This recipe serves four — or more, if you want to cut the steaks into smaller pieces. Salsa verde is best served immediately after it is made, but can be refrigerated for up to 2 days. Bring the sauce to room temperature and stir to recombine it before serving.

Salsa verde:

1 large slice hearty white sandwich bread

1/2 cup extra-virgin olive oil

2 tablespoons lemon juice

2 cups fresh parsley leaves

2 anchovy fillets

2 tablespoons capers, rinsed

1 small garlic clove, minced

1/8 teaspoon salt

Fish:

2 (1-pound) skin-on swordfish steaks, 1 to 1 1/2 inches thick

2 tablespoons extra-virgin olive oil

Salt and pepper

Lemon wedges

Toast bread in toaster at lowest setting until surface is dry but not browned, about 15 seconds. Remove crust and cut bread into rough 1/2-inch pieces (you should have about 1/2 cup).

Process bread pieces, oil, and lemon juice in food processor until smooth, about 10 seconds. Add parsley, anchovies, capers, garlic, and salt. Pulse until mixture is finely chopped (mixture should not be smooth), about 5 pulses, scraping down bowl with rubber spatula after 3 pulses. Transfer mixture to small bowl and set aside.

— For a charcoal grill: Open bottom vent completely. Light large chimney starter filled with charcoal briquettes (6 quarts). When top coals are partially covered with ash, pour two-thirds evenly over half of grill, then pour remaining coals over other half of grill. Set cooking grate in place, cover, and open lid vent completely. Heat grill until hot, about 5 minutes.

— For a gas grill: Turn all burners to high, cover, and heat grill until hot, about 15 minutes. Leave primary burner on high and turn other burner(s) to medium-high.

Cut swordfish steaks in half to make 4 equal pieces. Brush fish with oil and season with salt and pepper.

Clean cooking grate, then repeatedly brush grate with well-oiled paper towels until black and glossy, 5 to 10 times. Place swordfish on hotter part of grill and cook uncovered, turning once (using metal spatula) until steaks are streaked with dark grill marks, 6 to 9 minutes. Move swordfish to cooler part of grill and cook, uncovered, turning once, until center is no longer translucent and swordfish registers 140 degrees, 3 to 6 minutes. Top each portion of grilled swordfish with generous tablespoon of salsa and serve immediately with lemon wedges.