Hi all. I think this is a question asked time and again but I need some opinions. I am brewing tomorrow, an American amber 1.056, in a 2.5 gallon batch. My WLP001 cal ale vial is dated July 3rd so a production date of March 3rd. The calculators have me at about 80% viability so I'm about 19 billion cells under optimum. My Feeling is to just pitch the vial cause even a .5 liter starter gets me to 145 billion cells. I guess I could just pitch the yeast into a 1.036 .5 liter starter in the morning while I'm brewing and let it sit on the stirplate for 4-6 hours and wake them cells up.
Thanks for any suggestions.