People call this delicacy made from the blowfish "Japanese roulette," and they have good reason to do so. The fish contains deadly amounts of tetrodotoxin which can prove to be lethal in many cases. While cooking reduces quantities of this poisonous substance to an acceptable level, your tongue will still go slightly numb if you taste the blowfish. Only licensed chefs who have gone through rigorous training are allowed to prepare fugu. The cooks have to take responsibility for people’s lives. However, this doesn’t stop tourists from buying this famous delicacy.