Originally Posted by mammothkraken
1 package of WyEast 2124 Bohemian Lager...it did not swell much.
I've made several ales but this is my first lager and frankly the first time I have had this slow of a start up. Usually my beers go nuts within 12 hours.
With a 2.5 gallon batch, one package of yeast for a lager is not enough yeast. You're in for a long wait.
Normally, you use a pretty big yeast starter (far more than you'd guess, but consult mrmalty.com's pitching calculator for the amount) and pitch at under about 50 degrees.
It's true that if you pitch warmer, it'll help the yeast get going faster. That's to try to compensate for not using enough yeast in the first place! The same thing happens with ales- if you pitch at 85 degrees, it'll get going faster. It won't make the best tasting beer, but pitching too warm will encourage yeast reproduction.
The other thing to remember is that yeast don't like being chilled- but they love being warmed. So pitching warm and then chilling the wort may put the yeast to sleep for a while too, but it's better to get the proper temperature ASAP.
I'd get it at the right temperature and either add another package of yeast or wait it out. But I wouldn't let it sit at 65 degrees.