I just kegged my first high gravity 5.7% abv (at least for me) beer. It's an oktoberfest and I did a partial mash for this recipe. During fermentation I noticed the airlock (3 piece) was acting funny like no pressure was built up after the initial bubbles went away. I mean the piece inside the air lock went from touching the top to resting on the bottom. I just let things be and then after about 7 days transferred to a secondary.
After another 7 days I went to keg and noticed that I had some whitish circular spots on the top of the beer. Not sure if it was mold, but it didn't taste or smell to out of the ordinary.
After being in the keg for about 4 days I decided to have a taste. I was brewing a wheat beer at the time and I usually like to have some home brew in a glass while brewing some more!
The taste was kind of thick and slightly sweet. Not really sour and no bad smells. So I guess if it was mold then it didn't do anything to the beer.
My question is for higher gravity beer ~5.7% ABV is the thick slightly sweet taste normal?
Thanks in advance!