Cut the Wiener Schnitzel not too thinly, make incisions on the edges, cover with cling film and pat well, salt on both sides (normally they should be 6 mm thick).
For breading, prepare the ingredients: Provide flour on a plate, whisk eggs with oil and milk with a fork, preferably in a soup plate, spread breadcrumbs on a plate.
Flour cutlets on both sides, dip in egg mixture and coat in breadcrumbs on both sides (do not press too hard).
Heat the lard in a deep frying pan and fry the Wiener Schnitzel on both sides until they float.