This is my first post, glad I found this place!
Yesterday I pitched some White Labs SF Lager Yeast into an extract recipe at about 78 degrees.
Now, twenty hours later, there's no visible activity from the blowoff tube. The wort is probably sitting at about 65-70 degrees right now.
Is this yeast a slow starter? Did I perhaps receive a dead vial?
I have some safbrew s-33 on hand as a backup ready to pitch. Please advise!