On December 1, 2012 I made a 2 liter starter with wyeast 1272 American Ale 2 yeast. This is for a 1.070 IPA I was going to do. I did it on a stir plate with a shot of 02. I've done a lot of starters and I use Mr Malty to calculate pitch rate. I was supposed to brew the beer the first week of December and I had to go out of town expectedly so the starter has been sitting in my fridge since ever since. I know I can decant and step it up but I do not know how to calculate pitch rate off of a starter that has been sitting in the fridge for almost 2 months. I am thinking about just stepping it up with a 1 liter starter and hoping that is enough yeast, or am I better off doing another 2 liter starter and possible over pitching? I am sure someone else out there has been through this. Any ideas are appreciated.