- 1/2 cup mayonnaise
- 1/3 cup chopped fresh basil plus whole leaves for garnish
- 1/4 cup chopped fresh chives
- 2 tablespoons chopped fresh tarragon
- 1 tablespoon tarragon vinegar
- 1 tablespoon prepared white horseradish
- 4 (1-inch-thick) salmon steaks
- Place rack in top third of oven; preheat to 450°F. Blend mayonnaise, 1/3 cup chopped basil, and next 4 ingredients in processor. Season sauce with salt and pepper.
- Sprinkle salmon steaks with salt and pepper. Spread with thin layer of sauce. Place steaks, sauce side down, on small rimmed baking sheet. Spread second side with thin layer of sauce.
- Bake salmon until just opaque in center, about 12 minutes. Transfer to platter. Garnish with basil leaves and serve with remaining sauce.