First, let me provide the disclaimer that I am not particularly a hard cider fan.. this is a project I am doing for some family members who want me to do something "useful" with all that brewing gear..
I made a very basic hard cider by pitching cider yeast into 4 gallons of cold pasteurized sweet cider in a 5 gallon carboy. We did this as a "control" batch so we have something to compare to when we start adding things to it with future recipes. Its been sitting at around 62-64 degrees. Fermentation has been steady.. its been burping for several weeks with a nice bit of foam on top.
When I observe the carboy there seems to be some yellow or light brown stuff stuck to the sides, not just near the top as I would expect with beer kreusen. As well, the foam is diminishing. I am considering racking it off to another carboy. Is the gunk stuck to the side of my fermenter any worry? Does racking provide any benefit? How long can I leave it in the primary?
I don't really understand how the fermentation products are going to differ from my beer. If I am going to do it I need to do it tonight or I will have to wait 2-3 weeks for a carboy to be available again.