Ingredients:
- 1 (2-pound) beef tenderloin, trimmed
- 1 tablespoon olive oil
- 1 1/2 teaspoons coarsely ground black pepper
- 3/4 teaspoon kosher salt
- 2/3 cup light sour cream
- 2 tablespoons chopped fresh chives
- 3 tablespoons prepared horseradish
- 1 teaspoon fresh lemon juice
- 1 teaspoon Dijon mustard
- 1/8 teaspoon kosher salt
