Step by step

Heat the lard in a casserole and use it in place of olive oil for frying the vegetables

Tips
If you want to taste proper Hungarian goulash you must not in any way exceed the cooking times: in fact, the real recipe does not result in what we would call a stew, but is more similar in appearance to a soup.
Trivia
The meaning of the term in Hungarian ‘gulyas-leves’ (this is its proper name) is simply ‘herdsman soup’; ‘goulash’ derives from the German transliteration of the original name of this recipe.