no problems with animal feed grain and molasis most of the time. the dry molasis is not what you want at all it is full of protiens and solids as well. feed that to the animals or soak and starin test it then ferment it. feed molasis should taste sweet and bitter like blackstrap from the grocer. It is really too strong on flavor alone use about 3 pats sugar 2 part molassis by weight. It is unlikely that feed grade grains will create toxic distilates mostly high nitrates which are nutrients for the yeast. Probably safer to avoid them for beer most of the time they are not toxic just untested as thouroughly as human label. many lots get rejected cosmeticly for human use testing. cosmetics are kind of irrelevent in brewing. human consumption is such a small percentage only the very prettiest gets intrest. A single ton of barley will make over a thousand gallon of standard beer so demand is just not that great compared to production. A single farmer could keep bud or coors going for almost a month.

I have asked before but I never received a response. Store bought, unsulfured molasses through a restaurant has preservatives. Will this ferment? Quentin, the only livestock molasses that I have seen had sulfur and was very bitter. Is that sound like the product you are using?

i responded to a thread about this once, but i dont know where it went. anyway, i used feed grade molasses ,with preservative, as an additive once. about a gallon to a total turbo 48, sugar wash ,25l, i dont know exactly why i substituted it for a certain amount ,exact amount i dont recall,of sugar, but i geuss i just wanted to see. anyway, it made the wash look spookily brown and it took forever to finish fermenting. so long ,about 4 1/2 days, if i recall, that i was skeptical about using it at all. anyway, i let it finish and refluxed it. came out ok, same as the pure sugar wash from times past. i realize the whole distillation in reflux completely negated the whole purpose and possible flavour enhancement for using molasses, but what the heck. i felt safer doing that after seeing colours and smells i wasnt too used to. I also, subsequently, consumed all of the finished product with no incident, aside from getting too gooned up at an Easter party, tackeling my fiance's cousin, and not remembering doing so, until the confrontation the next morning. that though, i feel safe, was not attributed to the use of molasses in the wash. sorry its limited, just figured i would share my experience.