Smoked Beef Tenderloin With Creamy Horseradish Sauce

Ingredients

• 3-4 pounds beef tenderloin, center cut, trimmed
• 4 tablespoons Beefy Beef Rub, substitute favorite seasoning
• 3 tablespoons Kosher salt
• 1 tablespoon high heat cooking oil, like canola
• 1/2 cup sour cream
• 2 tablespoons prepared horseradish, drained, add more if desired
• 2 tablespoons mayonnaise
• 1 teaspoon apple cider vinegar
• 1/4 teaspoon salt
• 1/8 teaspoon black pepper
• 1 tablespoon chives, finely chopped