Salmon with Tarragon-Yogurt Sauce

Ingredients

1 cup whole-milk Greek yogurt
2 tablespoons chopped fresh tarragon, plus leaves for garnish
1 tablespoon finely grated lemon zest, plus 1 tablespoon fresh lemon juice
Coarse salt and ground pepper
3 pounds skinless salmon fillet, cut into 8 pieces, or 8 skinless salmon fillets (6 ounces each)

Make sauce: Stir together yogurt, chopped tarragon, and lemon zest and juice; season with salt and pepper.
Heat broiler, with rack set 4 inches from heat. Line a rimmed baking sheet with aluminum foil. Place salmon on sheet, and season with salt and pepper. Broil until opaque throughout, 8 to 10 minutes. (Keep at room temperature up to 1 hour.) Serve salmon, garnished with tarragon leaves, with sauce alongside.