Created by lazyme on June 6, 2020
Step 1: Preheat the oven to 350 degrees.
Step 2: Place potatoes in a large saucepan, and cover with cold salted water by 2 inches.
Step 3: Bring to a simmer over medium-high heat, and cook until potatoes are tender when pierced with the tip of a knife.
Step 4: Drain, and place on a baking sheet in the oven until completely dry, 5 to 7 minutes. (Drying the potatoes in the oven after boiling allows them to absorb more cream and butter, making richer mashed potatoes).
Step 5: Place the cream and butter in a small saucepan set over medium-high heat.
Step 6: Pass the potatoes through a food mill fitted with the fine disk into a medium bowl.
Step 7: Add cream mixture; stir to combine.
Step 8: Fold in horseradish, and season with salt and pepper.