2%。 Fermented rice wine is rice wine fermented from glutinous rice. From a chemical point of view, carbohydrates in glutinous rice are fermented to produce ethanol. So there is alcohol in steamed bread, although the alcohol content is only about 2%. Fermented steamed bread is a traditional snack in Jiangsu and Zhejiang provinces, which is characterized by combining yeast with fermented bread in the normal dough making process to make it fragrant.