I’ve had Northern Brewer’s Imperial Stout fermenting for about 3 weeks now. After a week I racked to secondary. I had a lot of trub settle out of it so I decided to rack again. It’s been sitting very peacefully for the last week looking very clear and peaceful until I checked it today. There was something growing on the surface that was very reminiscent of a spider-web. I’ve done a little bit of lurking and some people have suggested this might be lactobacillus, but I haven’t been able to find any pictures that look quite like mine.
What is this? Is my beer salvageable?