ZEN:

Zen is an approach to life with an emphasis on simplicity and finding inner calm.  Originally Zen is a school of Buddhism that asserts that enlightenment can be attained through meditation and intuition rather than through faith.  Zen Buddhism is mainly practiced in China, Japan, Korea and Vietnam.

History of Sushi:

In Japan, we can trace sushi's origin back to the 4th century. As a preserved food, the salted fish, fermented with rice, was an important source of protein. The cleaned and gutted fish were kept in rice so that the natural fermentation of the rice helped preserve the fish. This type of sushi is called nare-zushi, and was taken out of storage after a couple of months of fermentation, and then only the fish was consumed while the rice was discarded.