Horseradish Sauce With Tarragon Food

SALMON WITH POTATOES AND HORSERADISH-TARRAGON SAUCE

Steps:

• Heat oven to 400 degrees and liberally grease a 9-by-13-inch glass baking dish with butter. Slice the potatoes paper-thin (less than 1/8-inch thick) and line the dish with the potatoes, slightly overlapping them as you arrange them in an even layer. Season generously with salt and pepper, dot with the shallots and bake until the potatoes are almost cooked through, about 20 minutes.
• Meanwhile, prepare the horseradish-tarragon sauce: Add the sour cream, prepared horseradish, 2 tablespoons each tarragon and chives, white pepper (if using) and 1 teaspoon salt to a medium bowl and stir to combine. Refrigerate. (This makes about 1 1/3 cups.)
• Sprinkle the salmon with the paprika and season with salt. Remove the dish from the oven and gently place the salmon on top of the potatoes. Brush 2 to 3 tablespoons of the horseradish-tarragon sauce over the salmon to coat, then bake until the fish flakes with a fork, 15 to 20 minutes, depending on the thickness of the fillet.
• Sprinkle the fish with the remaining 1 tablespoon each tarragon and chives. Serve with the remaining horseradish-tarragon sauce.

MUSTARD-HORSERADISH SAUCE

Steps:

• Mix all ingredients in small bowl to blend. Season with salt and pepper. (Can be made 1 day ahead. Cover; chill.)

HORSERADISH SAUCE, WITH TARRAGON

Steps:

• Combine the horseradish, sour cream, mustard and tarragon leaves in a bowl. Mix thoroughly and add vinegar to taste. Season with salt and pepper.
• Put the sauce in two small bowls.