Snail breeding season is around 7th lunar month and around 4th - 5th lunar month of the following year is the harvesting season (when the snails are as big as a jackfruit seed). Snails are processed into many delicious dishes such as snail salad, snail rice vermicelli, and snails cooked with coconut water, etc.
It is an old idiom that "Tre island snails hai nguoi de, mot nguoi le" to express the delicious taste of this specialty. This is the specialty of Tan Phong island in Cai Lay district, Tien Giang province. The snails breed much in the Bau island river Basin, Tre island, Tron island. Thanks to alluvial sand, the snails are of big size, blue shells and thick intestine to become favorite dish of many people.
Source: Investment - Trade - Tourism Promotion Center