The document explains the process of producing ethyl alcohol from sugar solution (molasses), which involves two main stages: cultivating yeast in a diluted molasses solution and recovering the alcohol. During fermentation, yeast enzymes convert sugars into ethanol and carbon dioxide, resulting in a liquid called 'wash' with 8-10% ethanol. The 'wash' is then distilled to obtain a higher concentration of alcohol, which can be further purified to achieve 99.8% ethanol known as absolute alcohol.