Sukiyaki is culturally seen as a special meal to share. Buddhism entered the country in the Asuka period (592-645) and forbade the consumption of beef and livestock. There were special exceptions though, like if one were sick or if it was a special occasion with an honored guest so it was not something people got to eat everyday. But the good news is you don’t have to go to Japan and wait for a special occasion to try it – you can have some right now from scratch by following this video.
For complete instructions, and a bunch of other lunch ideas drop by her site at : http://lunchinabox.net/2008/08/20/how-to-make-spam-musubi/