have put lager in keg now (smells lovely) but .... (theres always a but with me :roll:) ... i had 2 caps with the keg, i used the one that had brass thread thing on it (ready for co2 bulbs or so i thought!) but having looked at homebrew sites, it seems that this cap does not have a pin and will not piece bulbs so i need a new cap thing etc ...the cap on our keg has a brass thread and when i look directly into brass bit the is a sort of downward cone with a tiny hole ,I dont really want to use cylinder co2 i prefer the idea of bulbs
QUESTION
will it harm lager if when i get new cap i swap them overstraight away? or would it be better to wait until pressure falls and i actually need co2?
or have i used the wrong cap and messed this batch up completely?
:?
Hmm, I see.
I've never used bulbs so aren't really sure about them. Are they fairly small? Do you use them once and then they are thrown away? Cos I've not seen them, I'm unsure of the thread.
It doesn't matter which system you use. I prefer the larger cylinder cos it lasts ages, years even, and as well as probably working out cheaper it saves running about buying bulbs more regularly. There are no local brew shops here like there used to be and it's about a 10 mile trip for serious supplies. You know how you never get round to it what with everything else going on? Wilkos down the road is ok for steriliser and yeast and basic stuff. If you're lucky.
The cylinders have an internal thread within the brass connector at the neck. So the keg cap has a valve with an external thread. Looking inside the keg-cap valve it looks like you say. A tiny hole at the bottom. I wasn't aware that the bulbs have a different thread or layout and so need a diiferent cap. If you have another cap and the bulbs obviously fit that, then you now have and know more than me.
But yep, if you've already transfered and sugared your brew into the keg, you could just leave things as they are and then swap the caps when you need to. Or you could do it now before too long has passed since transfer. Is it just a few hours ago? Still, you will have generated some pressure already and will lose it if you unscrew the cap.
I think it's nicer, and obviously more natural, for the beer to propel itself under its own pressure. But you never get the full brew out of the keg and it will start going flatter as each pint is drawn. CO2 is ok, it is totally inert, and is what is generated by the yeast anyway as sugar is converted to alcohol. But I always get a mild twinge of disappointment when I realise it's time to introduce extra gas. Silly really.
Oh yes, if it's lager, it may be intended to be very gassy, or your preference may be that it is. Lager should be served colder than other beers too am I right, in which case it will be important to have enough gas content present. Warmer beers are more active, so colder ones are more stable. You'll work it out as you go along - the 1st pint will be a clue as soon as you draw it.