I was wondering if anyone could help me with a pattern I’ve been seeing in my beers, lately. I typically brew 5 gallon standard gravity ales (in the 1.045-1.060 range) which sit in primary for a couple of weeks, clear in a secondary vessel for a couple of weeks, and then bottle condition for a month (at around 70*) before I start drinking them, at about the rate of a case a month.
During the first month of drinking, the carbonation is consistent with what I expect from the amount of priming (table) sugar that I add. However, during the second month, I’ve noticed increasingly that some of the bottles pour out with an excessive amount of foam. At this point, my guess is that I’m dealing with either a sanitation issue or a carbonation issue. If it’s a sanitation issue, I would guess that at least some of the bottles would foam up during the first month, but they never do. If it’s a carbonation issue, I would guess that I would see some sort of consistent pattern of under-carbed beers leading to over-carbed beers over the course of the two months, but many of the beers are fine during the second month.
Either way, I’m stepping up my sanitation practices to include soaking the bottles in PBW for a day or two, in addition to my previous routine, which consisted of using a bottle blaster to clean the already surface-clean bottles before using a Vinator to give each bottle several shots of Starsan, which has yielded good results until lately.
Any thoughts appreciated!