Once seen as a strange and exotic food, sushi is now so popular in the United States that you can buy it in any gas station. But, just because you can, it doesn't mean you should. As a rule, good sushi doesn't come shrink wrapped in polythene boxes, it comes from high-quality sushi restaurants. Preferably in Japan, but of course not all of us can go that far! 'Swissotel' in Osaka, Japan has put together this ultimate guide to sushi and sushi restaurants. The information might be most relevant for Japan, but also applies to any good sushi restaurant around the globe. Not only does it tell you about the different kinds of sushi available, this guide also talks a little about what it takes to become an itamae (that's 'sushi chef' to you and I) and about etiquette to observe in a sushi restaurant! Check it out and you'll become an expert before you know it!