Never had a yeast do that new one on me.
There is nothing wrong with your original approach, but yeast can't read your policy.
Mangrove Jack yeasts
Re: Mangrove Jack yeasts
Let's see now ... returning to the original post I started out: "With dried yeasts I tend to be a bit blazé - If it's in date, chuck it in, if it's out of date by just a few months, well just chuck it in too ...".
Flippin' Heck! Am I describing you too?
Cask-conditioned style ale out of a keg/Cornie (the "treatise"): https://drive.google.com/file/d/0BwzEv5 ... rDKRMjcO1g
Water report demystified (the "Defuddler"; removes the nonsense!): https://drive.google.com/drive/folders/ ... sp=sharing
Water report demystified (the "Defuddler"; removes the nonsense!): https://drive.google.com/drive/folders/ ... sp=sharing