I understand un-sulfured molasses should be used to make rum. I found a feed store source of molasses for about .22 a pound that has .04% sulfur in it. Is this level too high for making rum and distilling in a pot-still? If so what does the sulfur do.... I assume there is a reaction with the copper.
Is the "0.04% sulfur" listed with other nutritional data? It sounds low enough to be just the sulfur content of the living plant, not high enough to be "sulfured molasses", which are made from green cane that is fumed with sulfur during processing.