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Imperial Stout - Keith's barrel project

Method: Extract
Style: Imperial Stout
Boil Time: 60 min
Batch Size: 9 gallons (fermentor volume)
Pre Boil Size: 10.21 gallons
Post Boil Size: 9.4 gallons
Pre Boil Gravity: 1.100 (recipe based estimate)
Post Boil Gravity: 1.109 (recipe based estimate)
Efficiency: 70% (steeping grains only)
Hop Utilization: 96%
Calories: 359 calories (Per 12oz)
Carbs: 26.9 g (Per 12oz)

Created: Tuesday May 5th 2026

Original Gravity:

1.109

Final Gravity:

1.014

ABV (standard):

12.5%

IBU (tinseth):

84.2

SRM (morey):

50.0

Mash pH

n/a

Cost $

n/a

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Fermentables

Amount	Fermentable	PPG	°L	Bill %
24.55 lb	American - Pilsner24.55 lb American - Pilsner	37	1.8	65.9%
2.45 lb	New Zealand - Biscuit Malt2.45 lb Biscuit Malt	35	30.46	6.6%
3.27 lb	American - White Wheat3.27 lb White Wheat	40	2.8	8.8%
1.64 lb	Caramel / Crystal 60L1.64 lb Caramel / Crystal 60L	34	60	4.4%
0.82 lb	American - Roasted Barley0.82 lb American - Roasted Barley	33	300	2.2%
0.82 lb	American - Caramel / Crystal 120L0.82 lb Caramel / Crystal 120L	33	120	2.2%
0.82 lb	American - Chocolate0.82 lb Chocolate	29	350	2.2%
19.64 oz	American - Midnight Wheat Malt19.64 oz Midnight Wheat Malt	33	550	3.3%
1.64 lb	Turbinado1.64 lb Turbinado	44	10	4.4%
37.24 lbs / $ 0.00

Hops

Amount	Variety	Type	AA	Use	Time	IBU	Bill %
4.91 oz	Centennial4.91 oz Centennial Hops	Pellet	10	Boil	60 min	63.27	60%
3.27 oz	Centennial3.27 oz Centennial Hops	Pellet	10	Boil	15 min	20.91	40%
8.18 oz / $ 0.00

Show Summary View

Amount	Variety	Cost	IBU	Bill %
8.18 oz	Centennial (Pellet)		84.18	100%
8.18 oz / $ 0.00

Mash Guidelines

Amount	Description	Type	Start Temp	Target Temp	Time
11.5 gal		Infusion	--	152 °F	60 min

Yeast

Mangrove Jack - Belgian Tripel M31

Amount:	1.64 Each	Cost:
Attenuation (avg):	85%	Flocculation:	Medium
Optimum Temp:	64 - 82 °F	Starter:	No
Fermentation Temp:	-	Pitch Rate:	0.35 (M cells / ml / ° P) 307 B cells required

$ 0.00 Yeast Pitch Rate and Starter Calculator

Priming

CO₂ Level: 2.75 Volumes

Target Water Profile

Lexington filtered tap

Ca⁺²	Mg⁺²	Na⁺	Cl^-	SO₄^-2	HCO₃^-
0	0	0	0	0	0

Notes

water notes for 9 gal batch:

12 gal water needed (164 strike temp)
total mash volume of 14.95 gal
preboil = 10.5 gal
postboil = 9.25
fermentor = 9

Last Updated and Sharing

Views

Brews

Public: Yup, Shared
Last Updated: 2026-05-17 09:49 UTC

System Default

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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