Situation: Preignac
Surface area of the vineyard: 56 hectares (138 acres)
Average age of the vines:  37 years
Annual Production: Château Bastor-Lamontagne: 50 à 90 000 bottles
Blending: Semillon: 80 % Sauvignon: 17 % Muscadelle: 3%
Soils: Siliceous-gravel and clay-gravel

Average analysis characteristics:
Château Bastor- Lamontagne: alcoholic degree 14%, 5 to 5.5 % of unfermented sugar, total acidity: 4.6 g/l

Harvest: Entirely picked by hand and requiring 4 to 6 pickings of each plot. Generally carried out from the 20th September to the first days of November.

Vinification: The wines of Château Bastor-Lamontagne ferment in barrel for 3 to 4 weeks at a controlled temperature of around 22/24°C.

Ageing: From 13 to18 months in barrels, depending on the vintage.