The triple sandwich (el "Treep-lay") is an institution in peru. Delicious fresh avocados are plentiful there, and this sandwich has an extra layer of bread and mayonnaise to showcase them. There's a layer of chicken or egg salad (or sometimes both), and a layer of sliced tomatoes rounds things off. Try your own combinations. Triples are always prepared with tender white sandwich bread (pan de miga), and are sometimes cut into finger food size portions.