Aficionados say the tingle that the meat of the pufferfish leaves on your lips is part of the appeal

Pufferfish, known locally as fugu, swim in a tank at Japanese restaurant Torafugu-tei in Tokyo. Every year in Japan people are hospitalised after eating pufferfish; sometimes the result is fatal. But despite apparent dangers, strict rules on serving the toxic delicacy in Tokyo are to be relaxed.