Today I would like to introduce briefly the most famous Japanese food culture, SUSHI. If you are interested in SUSHI or have the chance to come to Japan, please read my article so you can be a SUSHI master! 【what is sushi?】 SUSHI was originally a preserved food in the old times. Before the invention of refrigerator, people used to pickle fish for preservation. In the Edo period, people started to eat fresh fish and shellfish. People put fresh fish or shellfish on the top of o