Flatten the butter in a bowl and add the egg yolk, parmesan and flour. Mix well.
Beat the egg whites in a separate bowl and incorporate the previous preparation with a pinch of ...
Put the mushrooms in a bowl, cover with warm water and let soak for 1 hour.
Drain well and chop the onion finely. Heat oil in a pan, add mushrooms and onion, and cook over low heat for 5 ...
Da Bruno Ristorante