1 teaspoon pink peppercorns, plus more for the garnish, smashed with the side of a knife
¼ cup basil leaves, thinly sliced
Kosher salt and freshly ground black pepper
Directions
Freeze tuna for 15 minutes to make cutting easier, and place a metal mixing bowl in the refrigerator. Remove the tuna from freezer and, with a very sharp knife, cut into ¼-inch cubes and place in a chilled bowl.
Whisk the shallot, vinegar, oil, lime juice and zest, and peppercorns in a small bowl.
Pour the vinaigrette over the tuna. Add the basil and fold together just to combine. Taste and adjust seasoning with salt and pepper.
Plate the portions individually using a ring mold or biscuit cutter to shape them neatly. Alternatively, scoop the tartare into endive leaves for sophisticated finger food.