For two thousand years, chestnut groves have been cultivated in the Susa Valley.
In the Middle Ages, the chestnut tree played a fundamental role in the local economy: the fruit for food consumption, the wood as a building material or fuel, the flowers for honey production, the leaves for cattle bedding, the tannin for tanning leather and as a dye.
Today, chestnut growing has received a new impetus in the valley and the local variety of chestnut, one of the most prized on the market, suitable for fresh consumption and the production of Marron glacés, has been recognised as 'Marrone della Valle di Susa', of which three ecotypes can be distinguished: Marrone di San Giorio, Marrone di Bruzolo and Marrone di Meana.