Battera

Although it is commonly mistaken for oshizushi (pressed) or saba zushi (mackerel), which is the most common fish used in the dish, battera is a sushi variety that can be prepared with other types of fish such as salmon and shrimps. It does belong to the category of boxed sushi (oshizushi) and it typically consists of a layer of aspidistra (baran) leaves that are only used as a coating, then a layer of fish, and finally a layer of sushi rice. Battera is always prepared upside-down, unlike oshizushi, and when served, the fish always comes on top of the roll, which is then sliced into small, rectangle-shaped pieces. The original version of battera sushi was prepared with kohada (gizzard shad) that was later replaced with other fish varieties.