Got to say, I missed the best after.....
another 4 weeks
might have helped a bit, but I don't think it would have been enough to make a drastic difference, particularly to the high dms.
To reduce the DMS, make sure the boil isn't covered, and extend the boil time as well, 90min. Have yet to do an AG lager myself, as yet (did a few extract ones), but if I was to do one it would have 90minuute boil as an absolute minimum. I do my ales at 90min as well. (apart from my last one, and guess what? DMS. Not a lot, but it's there.)
Was it NC? Because if so, that can increase the DMS, particularly if the boil is only 60min. (not having a go at NC, I NC myself, but DMS is one of the possibilities, particularly in paler beers.)
for both of these brews ive pitched the yeast at 18 deg then bought the temp down to 12 overnight. near the end of fermentation ive done a diacetyl rest at 18 deg for 36 hours before racking into a secondary and lagering at 4 deg for around a month.
Sounds right to me. Don't see any particular issue with this part of your method.
I've used 34/70 myself, and whilst it was pretty sulphury at the end of fermentation (as might be expected for a lager), it ended up nice after about 3(?) weeks lagered. It's strange that the fruitiness seemed so high, I would expect that from s23 more than from 34/70. I think that might have been one thing that age would have helped.
Hope this helps. Main thing is to not let it get you down. If that was your first, maybe do a nice easy ale to knock one out of the ballpark before revisiting lagers.
