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Impy

Method: All Grain
Style: Russian Imperial Stout
Boil Time: 120 min
Batch Size: 21 liters (fermentor volume)
Pre Boil Size: 28.5 liters
Pre Boil Gravity: 1.093 (recipe based estimate)
Post Boil Gravity: 1.139 (recipe based estimate)
Efficiency: 65% (brew house)
Calories: 656 calories (Per 500ml)
Carbs: 59 g (Per 500ml)

Created: Saturday June 7th 2025

Narwhale 2

by TristanMW

OG: 1.119 FG: 1.027 ABV: 12.0% IBU: 70

Stout

by C-vall

OG: 1.116 FG: 1.022 ABV: 12.4% IBU: 77

Original Gravity:

1.139

Final Gravity:

1.028

ABV (standard):

14.6%

IBU (tinseth):

72.5

SRM (morey):

50.0

Mash pH

5.5

Cost $

n/a

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Fermentables

Amount	Fermentable	PPG	°L	Bill %
2 kg	Flaked Barley2 kg Flaked Barley	32	2.2	15.5%
0.50 kg	Dingemans - Biscuit0.5 kg Biscuit	34.5	22	3.9%
0.50 kg	German - CaraRye0.5 kg CaraRye	34	67	3.9%
3 kg	Crisp Malting - Extra Pale Maris Otter3 kg Extra Pale Maris Otter	37.5	2	23.3%
3 kg	Dingemans - Pilsen3 kg Pilsen	36.8	1.7	23.3%
0.47 kg	Lyle - Black Treacle0.474 kg Black Treacle	36	74.4	3.7%
0.91 kg	Tate and Lyle - Golden Syrup0.907 kg Golden Syrup	40	1	7%
1.50 kg	Brown Sugar1.5 kg Brown Sugar	45	15	11.6%
1 kg	Crisp Malting - Roasted Barley1 kg Roasted Barley - (late mash tun addition)	31.28	695	7.8%
12.88 kg / $ 0.00

Hops

Amount	Variety	Type	AA	Use	Time	IBU	Bill %
100 g	East Kent Goldings100 g East Kent Goldings Hops	Leaf/Whole	4.84	Boil	60 min	36.03	33.3%
50 g	Bramling Cross50 g Bramling Cross Hops	Leaf/Whole	5	Boil	60 min	18.61	16.7%
150 g	Bramling Cross150 g Bramling Cross Hops	Leaf/Whole	5	Hop Stand	20 min	17.86	50%
300 g / $ 0.00

Show Summary View

Amount	Variety	IBU	Bill %
100 g	East Kent Goldings (Leaf/Whole)	36.03	33.3%
200 g	Bramling Cross (Leaf/Whole) 200 g Bramling Cross (Leaf/Whole) Hops	36.47	66.7%
300 g / $ 0.00

Mash Guidelines

Amount	Type	Start Temp	Target Temp	Time
25 L	Decoction	72 °C	65 °C	60 min
45 L	Fly Sparge	80 °C	70 °C	40 min
Starting Mash Thickness: 2 L/kg

Yeast

Mangrove Jack - Empire Ale M15

Amount:	2 Each	Cost:
Attenuation (avg):	72.5%	Flocculation:	Med-High
Optimum Temp:	21 - 24 °C	Starter:	No
Fermentation Temp:	-	Pitch Rate:	0.35 (M cells / ml / ° P) 235 B cells required

$ 0.00 Yeast Pitch Rate and Starter Calculator

Priming

CO₂ Level: 1.65 Volumes

Target Water Profile

London (Porter, dark ales)

Ca⁺²	Mg⁺²	Na⁺	Cl^-	SO₄^-2	HCO₃^-
100	5	35	60	50	265
Mash Chemistry and Brewing Water Calculator

Last Updated and Sharing

Views

Brews

Public: Yup, Shared
Last Updated: 2025-06-07 14:04 UTC

Recipe costs can be adjusted by changing the batch size. They won't be saved but will give you an idea of costs if your final yield was different.

Cost for

Gallons

Cost by

Final Yield

	Cost $	Cost %
Fermentables	$
Steeping Grains (Extract Only)	$
Hops	$
Yeast	$
Other	$
Cost Per Barrel	$ 0.00
Cost Per Pint	$ 0.00
Total Cost	$ 0.00

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