The chivito, a little steak sandwich that serves as one of Uruguay’s culinary calling cards, makes for a fine afternoon of lunching, or an easy outdoor dinner. Pound out the beef — rib-eye or shell steak, tenderloin or flat-iron — then put it on a hot grill. It cooks fast. Then assemble: a small kaiser or Portuguese roll, with lettuce, tomato and mayonnaise, some cheese and a slice of hard-cooked egg. Roasted peppers and grilled onions are welcome additions, and a spoonful of chimichurri salsa, freshly chopped, takes it over the top, but nicely. Figure on one or two per person. A nap can follow.