Before refrigeration, the Japanese kept their fish and rice fresh by steeping them in vinegar. Sushi was originally a form of preserving fish by salting it and resting it on vinegared rice. Gradually people began to eat the rice as well as the fish and sushi as we know it began.
Most people think sushi is just raw fish but the consistent part of sushi is actually the rice.
What changes are the toppings or contents that make the individual types. If you don't like raw fish, you can sample sweet egg, cooked prawns, vegetables, crab and more. Sushi is a popular food on special occasions in Japan. The recipe below is a type of 'makizushi'. But sushi doesn't just taste wonderful, it is also great for those watching their weight or health being low in fat and calories and high in iron and protein.