Fugu is a Japanese dish made from the pufferfish, which is known for being one of the most dangerous foods in the world. Synonyms for fugu include blowfish, pufferfish, and globefish. This delicacy is notorious for containing a toxic substance called tetrodotoxin, which can be fatal if consumed in large quantities. Due to its high risk, fugu can only be prepared by licensed and trained chefs in Japan. Alternatives to fugu include other types of seafood such as sushi, sashimi, and tempura. It is important to be cautious when consuming fugu and make sure it is prepared by a certified chef.