White and brown sugar are chemically similar, as brown sugar is essentially less refined white sugar with some molasses content. This difference may provide additional nutrients that could benefit yeast during fermentation. While there is uncertainty about the fermentation efficiency of each type, some suggest that brown sugar might enhance the fermentation process due to its impurities. Additionally, there is a belief that alcohol produced from brown sugar could have a more appealing taste, although the final product may still be neutral in flavor after distillation.