I'm planning a ~1.067 5 gallon IPA Monday and I only have a couple of packs of S-05. The expiration dates are 9/2015 and 11/2015. I wasn't planning on doing a starter and may not even re-hydrate (older posts when I've mentioned this some have said why bother).
Should I use both of these packs? From what I've read they are produced 2 years prior. Mr. Malty calculates I should use 2.1 packs. Thoughts?
I could buy new dry yeast, just lazy.