Fermentation:
After crushing and de-stemming, the juice from the grapes is put into the fermentation vats, where alcoholic fermentation takes place (the conversion of sugar into alcohol and CO2). At Siam Winery, fermentation vats vary in size between 300 and 1200 gallons. Some wines are fermented in small oak barrels. Yeast is added to start fermentation.
Siam Winery uses a wide variety of specialized wine yeasts from top sources in the United States, Germany, and France.