1, Gervais is a fermented beverage, fermented Gervais is a Russian-style bread and pure water as the main raw material, while adding yeast and lactobacilli fermentation products, so its flavor mainly from the metabolites used in the fermentation process of the bacteria, such as alcohols, aldehydes, acids, ketones and other flavor substances, these compounds with different properties will be extremely complex chemical reactions, and ultimately the formation of composite flavors, of which Ethyl acetate is the main flavor; in addition to the flavor of the raw materials used.

2, the carbon dioxide in Gervais is produced by yeast and lactobacilli in the fermentation process, as a natural component. When carbon dioxide is exhaled from the body, it will bring out the body heat and give people a sense of coolness, and at the same time, it will also bring out the flavor components of Gewürztraminer, which will make people feel a pleasant aroma. Therefore, fermented Gewürztraminer has a very strong and pleasant flavor. The flavors of Gewürztraminer beverages on the market today come mainly from food additives. Only Huayi Gewürztraminer is an all-natural bread fermented drink.