Blowfish, or Fugu (河豚), is one of Japan’s most infamous delicacies—a dish that is both highly sought after and potentially lethal if not prepared correctly. The fish contains tetrodotoxin, a deadly poison that is 1,200 times more toxic than cyanide, with no known antidote. Despite the risks, it is a luxury dish enjoyed by thrill-seeking food lovers.

If you want to safely experience this forbidden delicacy, here’s everything you need to know before eating Fugu in Japan!