Oatmeal Stout - Brew 47

Recipe from the Hughes book page 175.

Doing a half batch of 11.5 litres as an experiment.

brewfather recipe trying it out so can see percentages of grains, IBUs and easily see additions.

Water Profile

  • AMS (Acid Malt Solution) - 0.2ml per litre. so 2.3ml (this tallies with longman who did equivalent of 3.3ml)
  • DWB (Dry Water Builder) - 2g per 10litres. so 2.1g (as longman went higher)

This is what longman used:

AMS - 33 g/ml Calcium Chloride: 19 g/ml Calcium Sulphate: 8 g/ml Sodium Chloride: 17 g/ml

Mash

67C Mash temp - got to temperature in about 30 minutes

  • pale malt 2/1kg
  • Rolled oats 250g
  • Extra dark crystal malt 100g - sub for crystal malt
  • Chocolate malt 80g
  • Brown malt 35g - substitute for roasted barley

0650 Mash in

Boil

Add sparge water at 0750

Boiling at 0810

  • Admiral at start - 20g… should have been Challenger for IBU of 30 but this is IBU of 60!
  • Admiral at end for 10mins hopstand - 8g
  • EKG at end for 10mins hopstand - 8g

Protofloc at 15mins

Hopstand at 0930

Clean

Use Sodium percarbonate based cleaners ie PBW

Was all done by 1050. Around 3.5 hours.

Ferment

OG was 1048 at 20

I’ve got a Kveik, but want a traditional stout, so lets try it at 25 degrees which is the min to have less fruity flavours. Voss Lalbrew. 5 to 7 days it says at this temp

It fermented out to 1014 in 30 hours. I’ll leave it a few more days in the fermenter to see if any more activity. Have taken out of 25 degrees and is now at outside temps.

Condition

Want to put some in bottles, and rest in keg.

Okay this is a great beer! Drinking after 2 weeks is fine. Only getting better.

After 3 weeks it is nearly gone!

TODO

  • have a star san sanitisation tub to dip things in
  • sanitise all kit before using
  • use brewfather again to do brew day and help with process
  • use bucket to lift water inside night before
  • find other peoples water profiles around here
  • measure mash liquor volume and sparge water
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