Hay lmnyr....
Ya know... I'm still at a loss as to what happened here. I've been running all grain myself for a while and like I said I am somewhat of a "Nazi" when it comes to "cleaning up" the wash. I usually ferment for longer than a week (maybe 2...) and I let it settle for at least a week if not longer. The majority of my bourbon gets a lacto infection but I agree with ya...I am not worried about that one bit. I also use both hi temp enzymes as well.
The only things I did differently here: I added a different amount of wheat/rye (went for a more even ratio) and I changed my type of ground corn (southern states vs TSC). I can't think of one other thing different.
I ended up letting the jars sit for over a week and went back to check them. The last 0.5 gallons of those low wines really had a burnt smell and I ditched them. I added the 1.5 gallons to the next run (as a 1.5 run) and everything seems to have come out fine (minus the extra 0.5 gallons of course

). I dropped it all into my 5-gallon barrel and there she sits.
I had cleaned the hell out of the element between runs too and the 1.5 run had no issues. Sooo... I don't really know. Like you I run slow and then come up to about 15 or so amps for the majority of the run. I did run the first wash through my pot and liebig but I have certainly done that before without an issue...
I have to guess this is somehow related to the mash.... but I am not sure. Unfermented sugars is a possibility but this was a simple grain mash: corn, barley, rye/wheat, water, yeast.... never had an issue with it before and got great conversion with iodine(for the starch) but somehow I'm skeptical. The element has worked MANY times before...at similar power without any issue... I want to know dammit.... certainly don't want it to happen again!
