This dish originated in northeastern France in the region of Alsace-Lorraine. It consists of a pastry shell filled with a savory custard made of eggs, cream, seasonings and various other ingredients such as onions, mushrooms, ham, shellfish or herbs. The most notable of these savory pies is the quiche Lorraine, which has crisp bacon bits (and sometimes gruyère cheese) added to the custard filling. Quiches can be served as a lunch or dinner entrée, or as a first course or hors D'oeuvre.