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Imperial Stout

Method: All Grain
Style: Russian Imperial Stout
Boil Time: 90 min
Batch Size: 6 gallons (fermentor volume)
Pre Boil Size: 7.24 gallons
Post Boil Size: 6.5 gallons
Pre Boil Gravity: 1.081 (recipe based estimate)
Post Boil Gravity: 1.091 (recipe based estimate)
Efficiency: 65% (brew house)
Hop Utilization: 97%
Calories: 304 calories (Per 12oz)
Carbs: 32.1 g (Per 12oz)

Created: Saturday September 6th 2025

The Abyss Clone

by fboyle

OG: 1.108 FG: 1.036 ABV: 9.4% IBU: 64

PB & XAN

OG: 1.087 FG: 1.019 ABV: 8.9% IBU: 53

Mona Lisa 2022

by RustyBarrelHomebrewing

OG: 1.088 FG: 1.017 ABV: 9.4% IBU: 73

Original Gravity:

1.091

Final Gravity:

1.024

ABV (standard):

8.7%

IBU (tinseth):

64.4

SRM (morey):

37.2

Mash pH

n/a

Cost $

n/a

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Fermentables

Amount	Fermentable	PPG	°L	Bill %
18 lb	Bairds - Maris Otter Pale Ale18 lb Maris Otter Pale Ale	37.5	2.5	78.3%
2 lb	Briess - Barley, Flaked2 lb Barley, Flaked	32.2	1.4	8.7%
2 lb	Briess - Extra Special Malt2 lb Extra Special Malt	33.5	130	8.7%
0.50 lb	Briess - Chocolate0.5 lb Chocolate	25	350	2.2%
0.25 lb	Briess - Caramel Malt - 80L0.25 lb Caramel Malt - 80L	35	80	1.1%
0.25 lb	Bairds - Roasted Barley0.25 lb Roasted Barley	33	600	1.1%
23 lbs / $ 0.00

Hops

Amount	Variety	Type	AA	Use	Time	IBU	Bill %
2.25 oz	Citra2.25 oz Citra Hops	Pellet	11	Boil	60 min	57.4	69.2%
1 oz	Kent Goldings1 oz Kent Goldings Hops	Pellet	5	Boil	20 min	7.02	30.8%
3.25 oz / $ 0.00

Show Summary View

Amount	Variety	IBU	Bill %
2.25 oz	Citra (Pellet) 2.2499999948533 oz Citra (Pellet) Hops	57.4	69.2%
1 oz	Kent Goldings (Pellet)	7.02	30.8%
3.25 oz / $ 0.00

Mash Guidelines

Amount	Type	Start Temp	Target Temp	Time
7.54 gal	Strike	152 °F	152 °F	60 min
2.92 gal	Fly Sparge	170 °F	170 °F	30 min
Starting Mash Thickness: 1.33 qt/lb Starting Grain Temp: 70 °F

Other Ingredients

Amount	Name	Type	Use	Time
1 each	Whirlfloc	Water Agt	Boil	10 min.
1 tsp	Yeast Nutrient	Water Agt	Boil	10 min.
0.98 g	Gypsum	Water Agt	Mash	1 hr.
1.96 g	Epsom Salt	Water Agt	Mash	1 hr.
2.74 g	Canning Salt	Water Agt	Mash	1 hr.
0.49 g	Baking Soda	Water Agt	Mash	1 hr.
4.01 g	Chalk	Water Agt	Mash	1 hr.
0.09 g	Gypsum	Water Agt	Sparge	30 min.
0.18 g	Epsom Salt	Water Agt	Sparge	30 min.
0.25 g	Canning Salt	Water Agt	Sparge	30 min.
3 oz	Cacal Nibs	Flavor	Primary	21 days
1 each	Vanilla Bean	Flavor	Primary	21 days

Yeast

Omega Yeast Labs - Irish Ale OYL-005

Amount:	1 Each	Cost:
Attenuation (avg):	72%	Flocculation:	Medium
Optimum Temp:	62 - 72 °F	Starter:	No
Fermentation Temp:	67 °F	Pitch Rate:	0.35 (M cells / ml / ° P) 173 B cells required

$ 0.00 Yeast Pitch Rate and Starter Calculator

Priming

Method: co2 Amount: 11.66 psi Temp: 34 °F CO₂ Level: 2.75 Volumes

Target Water Profile

Balanced Profile

Ca⁺²	Mg⁺²	Na⁺	Cl^-	SO₄^-2	HCO₃^-
0	0	0	0	0	0
Mash Chemistry and Brewing Water Calculator

Notes

Ferment for 7 days @ 67 degrees

Rise 1 degree each day until reaches 74 degrees

Sit for 7 days at 74

At day 21 add Cacao nibs and Vanilla beans CAUTION OXYGEN Add CO2 during.

Keg on Day 35

Age in keg for 2 months.

Last Updated and Sharing

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Brews

Public: Yup, Shared
Last Updated: 2025-09-07 02:40 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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