I noticed as the fermentation approached complete there was a layer on top that seemed somewhat solid. I cold crashed and it dropped out but when I racked to kegs tonight I could see in the fermenter that the plug dropped as a unit. I've never seen this before and the beer attenuated to 1.005 which is at least a couple points lower than I expected. The beer taste fine as far as I can tell and I don't notice any weird aroma but I thought I remembered hearing this was a characteristic of a soured fermentation or infection.
Yes...No?
Yes...No?