A Little HistoryThis comes from Charles Ranhofer's The Epicurean (1894), the vast compendium he assembled after decades as chef at Delmonico's in New York, and it sits in a run of macaroni recipes -- the neighbouring numbers are Parisian style and macaroni with game puree -- that show how thoroughly the dish had been absorbed into French restaurant cooking by then. Much macaroni cookery reached American tables through a French filter, which may be why the seasoning here is cream, nutmeg and Parmesan rather than tomato, and why the name is given in French. The truffles mark it as a luxury version, for a house where fresh truffle was a purchasable commodity in season. Layering macaroni with cheese is an older European way of dressing the dish, and it survives in baked timballi and in the Piedmontese habit of finishing a dish with truffle shaved at the last moment so none of its aroma is cooked away.