Nitro Rice (ニトロ米, Nitoro-mai), the ultimate secret to longevity, is presumably a cereal found in the Dark Continent, in the swamps south of Lake Mobius. It is said to be able to extend one's life.
In the past, the Federation of Ochima attempted to retrieve it, but 99% of the members of the expedition fell prey to the Hellbells that inhabited those swamps, with only 11 of them surviving.
Dark Continent Expedition arc
Ging Freecss narrates the five trips undertaken towards the Dark Continent, and mentions the Nitro Rice to three members of Beyond's Expedition Team, including Curly and Mascher.
- ↑ 1.0 1.1 1.2 Hunter × Hunter - Volume 33, Chapter 344