I am not an expert like many on the board here, but I think it looks good.
One question though...
If you wanted more body, would it be possible to mash the Oats and some other grain separately at a higher temp, so that you get more of a mouth feel, whilst still getting more fermentable sugars out of the rest of the ingredients that are mashed at a lower temp?
To me that would be the same (or very similar) as just mashing in the middle point between the two temps.
Like say you did half a mash at 65C and another half at 70C, and mixed them together in the boil, I reckon it would be pretty similar to mashing at 67C.
Had a bit of a disaster when I forgot to turn off the tap from my HLT, and wondered why the mash was about to spill over the top of the mashtun.
Because of a much diluted mash, I achieved a record low extraction efficiency for me of 68%, instead of my usual 90+%.
Ended up with an OG of 1.042 instead of the mimimum 1.052 I had planned.
I did boil for 1½ hours, and somewhat more vigorously than usual.
I had planned to get 25 litres into the fermenter, so to get it down to 23 litres will have helped.
I'm hopeful it will still taste OK.
One of the best Milds/Bitters I ever brewed had a similar OG, and it tasted very malty.
well. ended up with 20L of 1.052 goodness (19 in fermenter, about 1 - 1.5 in pot in fridge). not quite to estimate.
my strike temp was about 74, and mash temp when all grains were in was 65.
when sparging, average temp was 65 (heated to 78 - 79).
mashed with 15L, fly sparged with anither 24 (was meant to be 21, but i'd have missed volume if i went the 3L less).
so not 100% sure why the big difference.
i'm picking the extra 3L makes a big difference to OG in the long run. but then i did stop sparging when i hit my 28L boil volume.
all other calculations were pretty much pot on.
2L of trub in kettle, 5L lost to evaporation.
any ideas?
on a side note, i only wanted to mash for 60 mins, but miss-timed my sparge water heating up.
the original 15L only took 15mins to heat, the 24 took about an hour. so ended up mashing for 90 mins. :(