During its two hundred years of isolation, Japan pursued a policy that attempted to prevent foreign political and cultural ideas to penetrate the country. The goal was foremost to thwart the growing influence of the Catholic church by effectively cutting Japan off from the rest of the world. The law stated that Japanese leaving the country as well as foreigners entering Japan would be punished by death. This uncompromising edict did not stop the outside world from seeping into Japanese culture. As an island nation, Japan might at first glance appear to be a reclusive country with a culture very different from its immediate neighbor. However, the transmission of new cultural elements such as cuisine rarely respects national boundaries. In turn, these new crops or dishes were adapted to a new ecological and cultural environment. In the case of Japan, these transformations might not appear evident, as they became over time an integral part of the culinary culture. If we take a closer look at Japan’s cuisine, we will quickly realize that although these outside forces are far from obvious, they still manage to permeate the country’s culinary culture.