I use US-05 on my IIPA sometimes, I like the results. Well, I pitched and aerated and I took off for a few days and came back to see that the auto valve on glycol unit failed and left the valve open and had crashed the beer to 45 degrees. And the US-05, while albeit slowly, was steadily fermenting.
Got it ramped up and fermenting away nicely now but pretty amazed that it would ferment at those temps. The yeast was rehydrated (see, Tom ) in about 95 degree water and I'm not exactly sure how long the lag was, but it was fermenting 2 days later at 45 degrees after pitch.
I have purposely fermented US-05 at around 54 degrees with good results before. But shocked to see it chugging along this cold. I seen some lager yeasts that struggle under 48.
Hey Keith, make sure you comment on the finished results. I have some friends who are brewing pro and seem to be having major problems with yeast handling. I suggested they use dry until they get the rest of their operation in order and they have pooh pooh'd the suggestion. I habitually have 04 and 05 on hand for those "just in case" disaster times and it has saved the day on a number of occasions when something unfortunate has happened to my propagated batch. Do I prefer my beers made with the liquid strains? Yes usually. But the differences are sometimes pretty subtle and it can be hard to pick a favorite.