The US president Thomas Jefferson and James Hemings, his chef, encountered macaroni in Paris and brought the recipe back to Monticello. Jefferson drew a sketch of the pasta and wrote detailed notes on the extrusion process. In 1793, he commissioned the US ambassador to France William Short to purchase a machine for making it. Evidently, the machine was not suitable, as Jefferson later imported both macaroni and Parmesan cheese for his use at Monticello. In 1802, Jefferson served "a pie called macaroni" at a state dinner. The menu of the dinner was reported by Reverend Manasseh Cutler, who apparently was not fond of the cheesy macaroni casserole. Nevertheless, since that time, baked macaroni and cheese has remained popular in the United States.
While Cheddar cheese is most commonly used for macaroni and cheese, other cheeses may also be used — usually sharp in flavor — and two or more cheeses can be combined. Other cheeses can be used such as Gruyere, Gouda, Havarti, and Jarlsberg cheese. Macaroni and cheese can be made by simply layering slices of cheese and pasta (often with butter or evaporated milk) then baking in a casserole, rather than preparing as a cheese sauce. Also, some like to include a crunchy topping to their baked macaroni and cheese by topping it off with bread crumbs or crushed crackers, which also keeps the noodles on top from drying out when baking.
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