Imperial Stout
134 EBC
31.8 IBU
Fermentables
Weight
When
Pale Ale Malt 66.2 %
3.8 kg
Mash
Flaked Barley 8.5 %
487 g
Mash
Golden Naked Oats 8.5 %
487 g
Mash
Chocolate Malt 5.1 %
292 g
Mash
Roasted Barley 4.2 %
243 g
Mash
Black Malt 3.4 %
195 g
Mash
Torrified Wheat 3.4 %
195 g
Mash
Oat Husks 0.7 %
40 g
Mash
Hops
Weight
When
Fuggle 5.9 %
34 g
60 Min
Other
Weight
When
Irish Moss
2.63 g
In Mash
Liquorice Root
6 g
In Boil
Yeasts
Amount
Craft Series M42 new world strong ale
1 pack
Volumes
Target
Actual
Before Boil
16 l
15.2 l
After Boil
12 l
12 l
Transferred
10.75 l
11.5 l
Pitching
10.75 l
11.5 l
Finished
10 l
10.5 l
Gravity
Target
Actual
Before Boil
1.081 SG
1.061 SG
After Boil
1.108 SG
1.085 SG
Finished
1.02 SG
1.03 SG
Other
Target
Actual
Attenuation
80 %
62.7 %
ABV
11.9 %
7.3 %
ABW
9.2 %
5.6 %
Efficiency
75 %
53.7 %
Temperature
18 ˚C
18 ˚C
Water
Target Profile
No Water Profile Chosen
Mash pH
5.2
pH Adjusted with
Five Star 5.2
Mash Three step infusion
Rest at
64 ˚C
30 mins
Rest at
68 ˚C
50 mins
Rest at
72 ˚C
10 mins
Notes
Mash
Total Water Needed : 22L
Mash Water : 16L
Sparge Water : 6L
It was very heavy to mash in and needed to use the pump to circulate some of the liquid to get all the grains fully soaked.
The mash was very slow may need some more oat husks added to improve this.
Mash Water : 16L
Sparge Water : 6L
It was very heavy to mash in and needed to use the pump to circulate some of the liquid to get all the grains fully soaked.
The mash was very slow may need some more oat husks added to improve this.
Boil
Liquorice added at 30 mins.
Fermentation
In the fermenter for 2 weeks, ended up very high.
May try to changing the mash steps to see if a simpler approach fixes it.
May try to changing the mash steps to see if a simpler approach fixes it.
Packaging
9L into a keg and 2.5L into bottles.