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Grilled Tuna with Peppers and a Caper Vinaigrette

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Grilled Tuna with Peppers and a Caper Vinaigrette
10 min
6 min
16 min



Sweet peppers and a pleasingly salty vinaigrette enhance the meaty fish.


  • 3/4 lb Italian fry peppers (light green)
  • 2 (3/4-lb) sushi-grade tuna steaks (1-inch thick) (RELATED PRODUCTS YELLOWFIN TUNA)
  • 1 1/4 teaspoons salt
  • 1 teaspoon black pepper
  • 1 1/2 tablespoons fresh lemon juice
  • 1/2 teaspoon Dijon mustard (RELATED PRODUCTS)
  • 1/4 cup olive oil (RELATED PRODUCTS)
  • 1 1/2 tablespoons small capers in wine vinegar, drained and chopped (RELATED PRODUCTS, CAPERS IN WINE VINEGAR)
  • 2 tablespoons chopped fresh flat-leaf parsley


Prepare gas grill for cooking over direct high heat.

While grill heats, cut peppers lengthwise into quarters, discarding stems and seeds. Trim ends so that quarters lie flat.

Sprinkle tuna all over with 1 teaspoon salt and 1/2 teaspoon pepper. Cook tuna and peppers on lightly oiled grill rack, turning over once, until tuna is pink only in center and peppers are just tender, 4 to 6 minutes total (peppers may take longer than tuna). Transfer tuna and peppers as cooked to a serving plate.

While tuna cooks, whisk together lemon juice, mustard, and remaining 1/4 teaspoon salt and 1/2 teaspoon pepper in a small bowl, then add oil in a slow stream, whisking until emulsified. Whisk in capers and parsley.

Serve tuna topped with peppers and caper vinaigrette.

Cooks' Note: If you don't have a gas grill or aren't able to grill outdoors, cook tuna on a lightly oiled well-seasoned large (2-burner) ridged grill pan over moderately high heat, turning once, 4 to 6 minutes total.