Marinated Sliced Beef with Vegetables
With a sharp knife, cut beef into thin slices. Mix 5 tablespoons sunflower oil, 3 tablespoons vinegar and season with salt and pepper and whisk vigorously. Drizzle beef slices with vinaigrette and cover and refrigerate for 1 hour.
Arrange raw vegetables on plate. Rub beef with horseradish, if desired and serve garnished with a dollop of tartar sauce and chives. Serve with boiled potatoes.