I had two packets of Wyeast. I activated both of them, I only ended up using one a few weeks ago (been since Jan 27).
The packet swelled and is still swelled in the fridge since I activated it. I assume it'll still be fine and the yeast are just cold crashed in the packet waiting to be active again. So can I just put the numbers into the yeastcalc.com with the date on the package and start a starter (the yeast date is Dec. 19th, so it would have some viability)? I plan to brew on Saturday and would use the yeast.
I bought a new package of yeast that is on it's way, so worse case I can use the old package