Katsu sando, Japan

Japan's katsu sando involves a deep-fried pork cutlet.

A deep-fried pork cutlet -- pounded and breaded with panko and tucked into a fluffy Japanese white milk bread called shokupan -- is the base for this cult-favorite, convenience store snack from Japan.

Considered yōshoku cuisine (Western-influenced), katsu sando is usually garnished with ribbons of cabbage and comes in chicken and egg salad (tamago) versions, too.