Hey Paul. Thought about this thread as I checked my 4.5L starter for 10G of lager I'm brewing this weekend. I typically put a small drop of Fermcap in the erlenmeyer as I'm boiling to prevent boil-overs. It also keeps the krausen in control as it's up towards the 5L mark but not going higher. One small bottle lasts a lifetime....
Just a thought for you.
Dave
Dave
I'm ashamed to admit...
I have Fermcap S and just flat out forgot to use it until I was watching the 5L flask start to near blowing off last week. It then dawned on me to use that (although I don't use it anywhere else anymore).
worked great, and I had back pressure on the main batch within ~7-8 hours on saturday so I assume all is well.