Bon Curry is a brand of curry manufacturer in Japan, formed on February 12, 1968. Products included Bon Curry Gold 21 (released in 2001) and Bon Curry Neo (released on February 12, 2009 as part of the company's 41st anniversary).
Relation to the Metal Gear series
Three Bon Curry products (the original Bon Curry, Bon Curry Gold 21, and Bon Curry Neo), alongside Mountain Dew, Pepsi NEX, AXE Body Spray, Doritos and magazines from Weekly Famitsu, Dengeki PlayStation, Dengeki Games, and Weekly Shōnen Magazine were included in the Japanese version of Metal Gear Solid: Peace Walker as a joke on product placement. In the overseas versions, Bon Curry was replaced by the curry (specifically, Curry, Great Curry, and Future Curry, respectively). In addition, supplemental materials such as briefing files covering Bon Curry and the retort pouch it was contained inside were cut from the overseas versions altogether, presumably for the same reason why Bon Curry and its variants themselves were replaced. On a related note, each of the Bon Curry descriptions on the Mother Base item description had the same flavor text regardless of what was selected, while their counterparts in the overseas release had a slightly different flavor text depending on the curry type selected.