The products of the fermentation of a sugar are ethanol and:

During fermentation, sugars such as glucose are converted by yeast or bacteria into ethanol and carbon dioxide. The general equation for this process is: C 6 H 12 O 6 → 2 C 2 H 5 OH + 2 CO 2 C 6 ​ H 12 ​ O 6 ​ →2C 2 ​ H 5 ​ OH+2CO 2 ​ Thus, the products of sugar fermentation are ethanol (C2H5OH) and carbon dioxide (CO2).