- Joined
- Jun 11, 2020
- Messages
- 570
- Reaction score
- 628
Brewzilla Brew #13: The physics
Brewed this the other day, currently fermenting away nicely.
I got this recipe from DIY Dog, after a few low efficiency brews I set my efficiency to 65% on Brewfather and scaled the recipe for 23l.
4.07kg Extra pale malt
940g Dark Crystal (450 EBC)
310g Caramalt (30EBC)
230g crystal malt (235 EBC)
25g Amarillo 9.2% FWH
12.5g Amarillo @30m
50g Amarillo @flameout
12.5g Bramling cross (6%) hop stand.
Total of 47IBU
Yeast: M44 slurry harvested from vacant gesture
Mashed with 23l of water, and saved 7l for sparge.
In my head brewdog is associated with pale ales so I treated my water on autopilot with 23ml AMS, a teaspoon at gypsum and campden. Then realised that I’d been an idiot and shouldn’t have added so much acid.
I didn’t want to re start the additions as the water was approaching strike temp, so had a look on Brewfather and it suggested adding 3G of baking soda, to that’s what I did.
Mashed in at 67C for a mash temp of 65C.
Left it alone for 15m, then gave it a stir and added the top plate and started the recirculation.
Checked it again 15m later and the wort was pouring down the centre pipe, so I turned the pump off and let it drain before turning the pump back on, but slower.
The sparge took ages, it usually only takes a few minutes but this time it took 20. I added the sparge water 1L at a time every time the level dropped below the top screen.
Pre boil volume was spot on at 28l, I didn’t bother with a pre boil gravity, as by the time the sample has cooled it’s too late to change anything anyway.
Boil went fine, chilled to 25C, put into fermentor, pitched yeast and set to ferment at 19C.
Measure the OG, I was aiming for 1.048, but this was 1.054, so this will be a bit stronger than planned.
I wonder if the higher efficiency was down to the slow sparge?
Brewed this the other day, currently fermenting away nicely.
I got this recipe from DIY Dog, after a few low efficiency brews I set my efficiency to 65% on Brewfather and scaled the recipe for 23l.
4.07kg Extra pale malt
940g Dark Crystal (450 EBC)
310g Caramalt (30EBC)
230g crystal malt (235 EBC)
25g Amarillo 9.2% FWH
12.5g Amarillo @30m
50g Amarillo @flameout
12.5g Bramling cross (6%) hop stand.
Total of 47IBU
Yeast: M44 slurry harvested from vacant gesture
Mashed with 23l of water, and saved 7l for sparge.
In my head brewdog is associated with pale ales so I treated my water on autopilot with 23ml AMS, a teaspoon at gypsum and campden. Then realised that I’d been an idiot and shouldn’t have added so much acid.
I didn’t want to re start the additions as the water was approaching strike temp, so had a look on Brewfather and it suggested adding 3G of baking soda, to that’s what I did.
Mashed in at 67C for a mash temp of 65C.
Left it alone for 15m, then gave it a stir and added the top plate and started the recirculation.
Checked it again 15m later and the wort was pouring down the centre pipe, so I turned the pump off and let it drain before turning the pump back on, but slower.
The sparge took ages, it usually only takes a few minutes but this time it took 20. I added the sparge water 1L at a time every time the level dropped below the top screen.
Pre boil volume was spot on at 28l, I didn’t bother with a pre boil gravity, as by the time the sample has cooled it’s too late to change anything anyway.
Boil went fine, chilled to 25C, put into fermentor, pitched yeast and set to ferment at 19C.
Measure the OG, I was aiming for 1.048, but this was 1.054, so this will be a bit stronger than planned.
I wonder if the higher efficiency was down to the slow sparge?