Sushi (すし, 寿司, 鮨) is the Japanese preparation and serving of specially prepared vinegared rice (鮨飯 sushi-meshi) combined with varied ingredients (ネタ neta) such as chiefly seafood (often uncooked), vegetables, and occasionally tropical fruits. Styles of sushi and its presentation vary widely, but the key ingredient is sushi rice, also referred to as shari (しゃり), or sumeshi (酢飯).
Food is any substance consumed to provide nutritional support for the body. Historically, people secured food through two methods: hunting and gathering and agriculture. Today, the majority of the food energy required by the ever increasing population of the world is supplied by the food industry.