What do samurai and sushi have in common? The first answer that comes to mind might be that they’re both Japanese, but their connection is actually much deeper and important than that. The development of washoku, Japan’s unique traditional cuisine, wouldn’t have been possible without the technology that was used to make katana, the ultra sharp swords carried by samurai. That’s right—the same techniques that were once employed to make lethal weapons are also what make possible the preparation of a mouthwatering sushi dinner or a beautiful kaiseki meal.