I brewed an oatmeal stout 6+ months ago but it tasted bad so I put it aside to see if it would taste better down the line. I went recently to grab a bottle and noticed a ring around the top of the beer line of the bottleneck in virtually every bottle. I am pretty good with sanitizing but I know that infections often show themselves like this.
For what it's worth, I made the n00b mistake of following the 1-2-3 method exactly, so when I racked the beer actually wasn't done fermenting (but did finish - I even had yeast cakes and krausen in my secondary for a while). Would anything that resulted from this be the cause for the formation of sediment in the bottleneck?
I plan on trying the beer regardless but I am hoping to understand why this may have happened, if that's possible. Thanks to everyone and I have included a picture below.
For what it's worth, I made the n00b mistake of following the 1-2-3 method exactly, so when I racked the beer actually wasn't done fermenting (but did finish - I even had yeast cakes and krausen in my secondary for a while). Would anything that resulted from this be the cause for the formation of sediment in the bottleneck?
I plan on trying the beer regardless but I am hoping to understand why this may have happened, if that's possible. Thanks to everyone and I have included a picture below.