millefoglie

Millefoglie is Italian for thousand leaves, built from mille (thousand, from Latin mille) and foglie (leaves, from Latin folia, plural of folium). It is the Italian name for the pastry the French call mille-feuille: alternating layers of laminated puff pastry and pastry cream, typically finished with powdered sugar or fondant icing. The name is a count of something that cannot actually be counted, because the layers multiply through folding and resist any precise number.

The technique of laminating butter into dough through repeated folding appears in European pastry literature by the mid-17th century. François Pierre La Varenne included a recognizable mille-feuille recipe in Le Cuisinier François in 1651, though the technique may have been practiced in French and Middle Eastern kitchens before he published it. The mathematics of lamination explain why the name is always an approximation: six folds of a three-layer dough produce 729 layers, and seven folds produce 2,187. A thousand was always a poet's number, not a baker's.

Italy received the pastry from France and adapted it under the Italian name millefoglie. Italian pastry cooks favored crema pasticcera over the French fondant topping, and the filling tended toward vanilla or lemon. In Milan and Turin the millefoglie became a pasticceria staple by the 19th century, and regional variations developed that differ in texture and assembly from the crispier French original.

Today millefoglie and mille-feuille appear on the same menus in the same countries, with the French name carrying more prestige in fine dining and the Italian name more common in Italian bakeries and home cooking. Both point to the same impossible arithmetic: a number that was never a measurement. The pastry shatters at the touch of a fork, which is its way of proving that the layers were real.