Tocosh (also known as togosh or tocos) is a traditional Quechua food prepared from fermented potato pulp or, less commonly, maize.
The fermentation process used to make tocosh was discovered by the Incas (or possibly another of the many cultures within their empire).
The Incas believed that tocosh was a gift from Inti, the sun god, for the preservation of the body.
The tocosh fermentation process allows these nutrients to be found in simpler, easily assimilated forms.
A pool of water with a current (as on the bank of a stream) can also be used, and the potato or maize is placed instead in a mesh bag off grass covered with stones.
When a foam with a strong rotten smell rises to the surface, the tocosh is ready to be collected.