Went to make a 2 L starter tonight with washed yeast. I didnt think about it until I pulled it out of the fridge, but the yeast washed on Dec 4th. I have 800 mL of nice looking yeast, but according to Mr Malty, I am way short (by about 1200 mL). I placed it in the starter beaker (on a stir plate) and less than an hour in, got some nice frothy head and good airlock activity (could this solely be from the stir plate?).
I have about 24 hrs before pitching, and I dont have anymore DME to make another starter.
1) Do I pitch it anyway (and hope for the best)
2) Add non starter (or started) yeast from yeast washed last weekend to the cooled wort?
I am leaning towards pitching the older washed yeast anyway, and if the activity is not great (within 4-6 hrs.) , pitching the back-up non-starter yeast.
Any thoughts would be appreciated.