http://www.fao.org/3/aq106e/aq106e00.pdf
We do not have any real history were snails eating started from or when people started eating snail. In Liberia, edible snails can be found in the forest, in the swamp and on garbage sites. People gather snails, eat them and sell the remaining as a way to make money. This Farmers level Tech-Note aims to provide ideas to farmers who would like to produce snails on a small scale for eating or selling. It is not for farmers who want sell or export snails in large-scale.
The tech-note is focused on the three types of edible snails that are common in Liberia:
The forest snail/Giant African snail (Achatina achatina)
The swamp snail (Archachatina marginata)
The city girl (Achatina fulica)