I brewed a 16-gallon batch of my Lawnmower Lager, popped it into my Brewhemoth and inoculated it with 3 packets of Saflager S-23. My chilling solution isn't working as well as I'd hoped, and it's currently around 60F after about 16 hours - I've just got some bubbling in the blowoff. I expect it'll be in the mid-to-high 60's when I get home from work today due to fermentation kicking into high gear. I was hoping for 53-57F.
I've got some plans to get the temp down, but if I can't I'm going to call it a California common/steam beer and hope for the best.
Which brings me back around to my question: since a steam beer is typically fermented with lager yeast at ale temps from the start, won't it generate a ton of diacetyl? And since you're already at ale temps, how do you do a diacetyl rest to clean it up?