The breaded cutlet at its core traces directly to Milan's 'cotoletta,' brought over by Italian immigrants and then Argentinized into a sandwich Milan itself never invented.
A thin, breaded beef or chicken cutlet fried crisp and stuffed into a crusty roll with lettuce and tomato, sold at sandwich counters and kiosks across Buenos Aires at all hours. Many spots offer it 'completa,' piled with ham, cheese, and egg.