NickJD and others,
Many thanks for this fantastic thread, and the '20L Stovetop All Grain Aussie Lager' thread.
It's taken me about six months of perpetual reading and re-reading and confusion and doubt, but I finally gave in and had a crack yesterday with a 9L SMaSH (JWH Pilsener and SuperPride.)
Some things that went 'wrong' for me: got halfway through the mash, went looking for the hop sock that I thought i'd bought, turns out I hadn't. :/ Decided that i'd quickly rinse out the voile bag once the wort (or wait, is it liquor at that stage?? meh.) went back on the stove after the mash, worked a treat.
Was very surprised to find that, after the boil, I had 6.5L of 1070, and panicked, but then found your helpful "how much water shoudl I add to hit a particular gravity" formula [back on about page 28 of this thread...]
Doing a taste at different points of the boil was very educational (and delicious!!) - the progression from super-sweet to quite bitter was very interesting.
I've written down all the figures I think I'll need, how can I calculate my efficiency?
Thanks again for your awesome contribution.

:beer: