Eh, me again - I think I may have killed my yeast, I was re-hydrating it as per the instructions on Beoir but I used boiled water and as I only had the floppy thermometer that came with my brewing kit I was struggling to get an accurate temp reading, it looked like it was around 26 - 28 degrees but I've no way of being sure - I added the rehydrated yeast to the mixture and nothing has happened so far? If I have killed it is it still possible to resurrect my brew?