I was in the same position on my previous batch. I had the biggest krauzen with this brew. See my post: https://www.homebrewtalk.com/showpost.php?p=79333&postcount=14JeffNYC said:Don't have any DME handy and want to brew this weekend. Thoughts?
I don't think it is mutation that makes the yeast loose its enzyme for Maltose (Maltase).JeffNYC said:Just to clarify: I'm going to be brewing a beer with a lot of corn sugar (Duvel), so I thought the shock could be reduced somewhat. Also, I intend to use the starter the next day. How much can yeast mutate in one day?