micklupulo
Landlord.
I was absolutely kidding. Haven't had any for decades, but I recall it was as weak as gnat's pee but gave me a blinding headache half-way through the first pint.
As for putting out camp fires: straight on there, cut out the middle-man.
As for out-of-date kits: the yeast is the item least likely to deteriorate, trouble is it's possibly not the best to start with. So if you're going to change it, then change it even in a fresh kit.
My guess is that the headache was from the nitrogen pumping it out. A few years ago I attended an office social type event at the Wolves entertainment suite and developed a splitting back of the head ache half way through a pint of keg Banks's bitter. 45 years ago Harp was ok and if I remember correctly cost 15p per pint!