PREHEAT. Preheat oven to 375 degrees F.
PREP. Lightly coat cleaned beets with oil, then wrap beets in aluminum foil by color, so the colors don't bleed into each other and place on a baking sheet.
COOK. Roast beats in the oven until cooked through, approximately 45 to 60 minutes.
PREPARE SAUCE. In a blender, combine sour cream and grated horseradish root and blend about 30 seconds. Check flavor, add salt & pepper to taste and blend again.
PEEL. Remove beats from the oven, let cool for 10 minutes, then peel and slice into thin round slices.
PLATE. On a large platter, lay round slices in varying colors slightly overlapping them until platter is full, then drizzle sauce on top in a zig zag motion. Garnish with minced chives.
SERVE & ENJOY!