I have some newer harvested 1056 but I noticed in my fridge that I have a partially inflated smack pack from 5/2011 as well as a pint jar of harvested 1056 from August or Sept of 2011. I hate to throw either away but if you were going to use one, which would you try to build up with a starter?
I could use newer yeast, but I also have some second runnings wort to use up which I use to make starters.