Luke, parsley, gherkins and capers chopped very finely, add the mustard, the oil, vinegar, pepper, salt and mix well. Beef cut into thin portions bay with some of the sauce and let stand. Boiled potatoes cut into rings, watered with sauce and also were allowed to stand. Before I served the salad is arranged on a plate of lines: meat, potatoes row and is decorated with pieces of hard boiled eggs and tomatoes.