Despite the name, it has no known link to America, and in Belgium it's sold ready-mixed at butchers and supermarkets as well as in sandwiches.
Finely minced raw beef is mixed with mayonnaise, mustard, capers, onion and Worcestershire sauce, then spread thickly on bread or served alongside a cone of fries. A staple at Brussels sandwich counters and frituurs.
Belgian Waffle (Gaufre de Liège)
Mitraillette
Kaaskroket (Cheese Croquette)