This came up a while ago. Now I need a food category….

SushiFAQ.com – The Sushi FAQ – Sushi Information

Technically, the word `sushi’ refers to the rice, but colloquially, the term is used to describe a finger-size piece of raw fish or shellfish on a bed of vinegared rice. This can be eaten as is, or is often dipped into shoyu (Japanese soy sauce) and then eaten. Often, much care is put into the creation of the dish and the many methods of preparing the food indicate the importance of appearance to the educated consumer.