aprichman
Well-Known Member
Those look like co2 bubbles and not krausen but that's just my guess. My experience with 05 is that it gets a normal foamy krausen then just all drops until basically there is nothing left on top of the beer. Maybe do a gentle swirl not slosh and see if some of those bubbles don't get re absorbed or get your airlock to burp a little. But 15 days is a long time to have any top activity.
This is my second time using US05 where it forms a normal looking but small krausen. About 1 day into the krausen I see a small amount of yeast start to grow on top. Over the next few days the yeast grows over the top of the krausen. Once it completely covers the krausen the CO2 gets trapped and forms giant yeast bubbles.
It's super weird and I'm curious why US05 behaves so funny. I pitched a Wyeast smack pack into 2.5 gallons of wort 10 days ago and it's behaving beautifully. Much better clarity than I'm used to seeing with rehydrated dry yeast.
The beer I brewed a few batches ago using washed Notty behaved really nicely too.