Peel, wash and roughly dice the potatoes. Cover and cook in little salted water for about 15 minutes. Clean and wash the Brussels sprouts. Cover and cook in a little salted water for 15-18 minutes
Wash the cutlet and pat dry. Fry in a coated pan in hot oil for 3-4 minutes on each side. Season with pepper
Drain the potatoes and collect 5-7 tablespoons of cooking water. Mash potatoes and water finely. Season to taste with horseradish, salt and pepper. Drain sprouts. Arrange everything. Garnish with marjoram