The image most people have of sushi refers mainly to nigiri sushi – that is, a piece of raw fish sitting atop a hand-shaped clump of vinegared rice. However, there are many different kinds of sushi out there, such as Inari sushi, and rolled sushi too.
Another popular variety is oshizushi or ‘pressed sushi’, which is made from layers of different toppings and sushi rice that are placed in a mold and
compressed together by weight, making them into a tightly pack sushi stack.
Oshizushi (a.k.a. oshi sushi—meaning “pressed sushi” or hakozushi / hako sushi—meaning “box sushi” in Osaka) is a traditional variation of sushi created during the 18th century in Osaka, Japan. Oshizushi was the prototype of sushi and has been around for 1000 years. It is pressed inside of a detachable wooden box known as an oshibako, oshizushihako, or hakozushigata.
This creates a perfect rectangular or cubed shape. Known for its clean aesthetic, this block-shaped sushi can fit perfectly in a bento box and is often arranged in an eye catching pattern.