grade blast freezer where it will stay for a week or longer in minus 82 degrees celsius. he pioneered this technique years ago in new york, where if you bothered to ask, he would have proudly told you that the absolutely unbelievably sublime piece of perfect sushi you were eating was frozen. >> delicious. >> thank you very much. >> which is more important, the rice or the fish? >> rice. >> more important? what percentage? >> about 90%. >> wow. >> fish is the second ingredient. the main ingredient is rice. so my sushi is rice. >> yasuda, he still trains, though his fighting days are over. he says he was tired of hurting people. he brings me to try and show me how his sushi technique and karate are one in the same.