Purchased 2 x S23 sachet's yesterday (expiry of 11/2013), rehydrated and went to pitch at 8.30pm last night...
Noticed some UFO's (unidentified floating objects) in the fermenter, dumped the S23 in; hoping that either the UFO's were due to the WY2001 kicking off, or at least the S23 would introduce enough alcohol to freak out any contaminants...
Checked this morning - thick white collar of krausen. Temporary hurray!
I will check for off-flavours/smells in a couple of days... fingers crossed not all is lost with what is my most troublesome brew to date.
Thanks to those who provided advice and support. :beer: