about: Japanese cuisine

There are various types of sushi: sushi served rolled inside nori (dried and pressed layer sheets of seaweed or alga) called makizushi (巻き) or rolls; sushi made with toppings laid with hand-formed clumps of rice called nigirizushi (にぎり); toppings stuffed into a small pouch of fried tofu called inarizushi; and toppings served scattered over a bowl of sushi rice called chirashi-zushi (ちらし).

History

main: History of sushi

The main idea in the preparation of sushi is the preservation and fermentation of fish with salt and rice, a process that has been traced back to Southeast Asia where fish and rice fermentation dishes still exist today. The science behind the fermentation of fish in rice is that the vinegar produced from the fermenting rice breaks the fish down into amino acids. This results in one of the five basic tastes, called umami in Japanese. The oldest form of sushi in Japan, Narezushi still very closely resembles this process. In Japan, Narezushi evolved into Oshizushi and ultimately Edomae nigirizushi, which is what the world today knows as "sushi".

Modern Japanese sushi has little resemblance to the traditional lacto-fermented rice dish. Originally, when the fermented fish was taken out of the rice, only the fish was consumed and the fermented rice was discarded. The strong-tasting and -smelling funazushi, a kind of narezushi made near Lake Biwa in Japan, resembles the traditional fermented dish.

Beginning in the Muromachi period (1336–1573) of Japan, vinegar was added to the mixture for better taste and for preservation. The vinegar accentuated the rice's sourness, and was known to increase its life span, allowing the fermentation process to be shortened and eventually abandoned. In the following centuries, sushi in Osaka evolved into oshi-zushi, the seafood and the rice were pressed using wooden (usually bamboo) molds. By the mid 18th century, this form of sushi had reached Edo (contemporary Tokyo).Zschock, Day. The Little Black Book of Sushi: The Essential Guide to the World of Sushi. Page 14-15. 2005. ISBN 1593599617.

Types of sushi