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T-Bird

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I bought some cider from a local orchard, one that I have used in the past to create good homebrew cider (I used Cote de Blanc yeast for those). Their cider is pasteurized (no preservatives though) so it makes good cider to turn into hard cider. I bought 5 gal. for a batch and I just moved it to secondary and took a sample and it tasted pretty bad. I don’t have a great palate and I can’t quite nail what flavor I am tasting to determine what went wrong. Right now I think it is Mercaptan (ethanethiol), but it is hard to tell (getting that from here). Mostly it just has a rancid smell and made me gag when I took a whiff of it while racking it.

Here are all the facts that I can give you:
• To aerate the cider, I pour half of each gallon in the fermenter, replace the lid and shake the remaining half, and then add it.
• I used Nottingham Yeast, rehydrating it like the packet says, then pitching it. One thing I have noticed from the other batch of Notty I used was that it smelled very bad. The cider that I used it in before turned out ok (with no unexpected off flavors), but I also had to add a starter with Cote de Blanc because I used cider with Potassium Sorbate (amateur hour) and eventually powered through.
• It only sat in the primary fermenter for two weeks, especially because fermentation started so slowly. So I don’t think Autolysis is the problem, but maybe someone else can pin it on that.
• I don’t know what temp the cider was sitting at, but it was in darkness. I have never been too worried about temps, mostly because I don’t have a place where I can keep the beer a fairly constant, cool temp. If I had to guess, I would say that it was probably in the high 60’s to low 70’s air temp, so that means the fermentation temp would be higher (which I have since found out that is not the best for Notty). Even with the warmer temps of the cider, it took nearly two days (I think) for the airlock to show any activity, and was never bubbling crazy fast, like I have seen with some beers.
• One thing that I did different for this that I didn’t use the commercial sanitizer I have access to. Instead I soaked the fermenter in Oxiclean Free for a day (mostly to get some of the light brown stain off), rinsed it out multiple times with hot water, and then sprayed it with BTF Idophor. I got turned off from the Sanitizer because it ruined my auto siphon quickly, but I think the plastic buckets hold up much better with the hot temps.
• I put the sample I pulled in the fridge to let it cool, and it tasted much better. There wasn’t an overpowering smell and taste, like it was just coming out of the fermenter. Also I let it warm up to room temperature again and it doesn’t seem as bad, but that might be me not remembering the exact taste.

Mostly I just want to get someone else’s opinion on this. I can’t tell if it was my sanitation, was there was any Oxiclean left over in the fermenter? Or was it having such high temps while fermenting with Notty? Or just some bad luck? And if it does age well over the next few weeks, could I put some spices in it to help mask the off flavors?
Any input would be greatly appreciated.
 
Sulfur smells (your suggestion of mercaptan) are not uncommon with cider ferments (search for rhino farts), because the cider lacks the nutrients (free-amino nitrogen compounds) that yeast like to have a healthy ferment. Now, plenty of people make cider without adding yeast nutrient, but others certainly do add nutrient to the must prior to fermentation.

Over time, the sulfur smells will dissipate. This is especially true when you are racking your cider to age in secondary or tertiary vessels. Two weeks is not enough time to let the sulfur dissipate. I would recommend racking to secondary (keeping head-space minimal). Don't bottle it with the sulfur otherwise it will be trapped in the bottle. If you're kegging, you could keep venting the keg to get rid of the sulfur.
 
Thanks for the quick responses! Both help alleviate some of the fears about a ruined batch. I meant to put some yeast nutrient in but completely forgot. I guess I won't make that mistake again. And I'll let it sit in the secondary for a bit long than normal.
 

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