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Murphy's Iris Stout

Name: Murphy's Iris Stout
Prep time: 120 min
Cook time: 60 min
Total time: 180 min
Yield: 7 gallons
Cuisine: Homebrewing
Ingredients: 7.38 lb Isaria 1924; 0.65 lb Roasted Barley; 0.52 lb Chocolate; 1 lb Flaked Oats; 0.35 lb Crystal Dark Medium (78.55 L); 0.25 lb Turbinado; 0.18 lb Black Malt; 1.04 oz Magnum Hops; 0.265 oz East Kent Goldings Hops

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Method: All Grain
Style: Irish Stout
Boil Time: 60 min
Batch Size: 7 gallons (fermentor volume)
Pre Boil Size: 9 gallons
Pre Boil Gravity: 1.033 (recipe based estimate)
Post Boil Gravity: 1.042 (recipe based estimate)
Efficiency: 80% (brew house)
Source: Chris Daily
Calories: 138 calories (Per 12oz)
Carbs: 14 g (Per 12oz)

Created: Sunday April 6th 2025

Guinness Clone

OG: 1.043 FG: 1.011 ABV: 4.2% IBU: 39

Original Gravity:

1.042

Final Gravity:

1.010

ABV (standard):

4.1%

IBU (rager):

43.5

SRM (morey):

30.2

Mash pH

n/a

Cost $

n/a

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Brew Log History

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Carbs: {{ stats.carbs | number:1 }} g / 12oz

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Fermentables

Amount	Fermentable	PPG	°L	Bill %
7.38 lb	Weyermann - Isaria 19247.38 lb Isaria 1924	35.8	3.3	71.4%
0.65 lb	American - Roasted Barley0.65 lb Roasted Barley	33	300	6.3%
0.52 lb	United Kingdom - Chocolate0.52 lb Chocolate	34	425	5%
1 lb	Flaked Oats1 lb Flaked Oats	33	2.2	9.7%
0.35 lb	Simpsons - Crystal Dark Medium (78.55 L)0.35 lb Crystal Dark Medium (78.55 L)	33	78.55	3.4%
0.25 lb	Turbinado0.25 lb Turbinado - (late boil kettle addition)	44	10	2.4%
0.18 lb	American - Black Malt0.18 lb Black Malt	28	500	1.7%
10.33 lbs / $ 0.00

Hops

Amount	Variety	Type	AA	Use	Time	IBU	Bill %
1.04 oz	Magnum1.04 oz Magnum Hops	Pellet	12.1	Boil	60 min	41.5	79.7%
0.27 oz	East Kent Goldings0.265 oz East Kent Goldings Hops	Pellet	6.6	Boil	20 min	1.96	20.3%
1.30 oz / $ 0.00

Show Summary View

Mash Guidelines

Amount	Start Temp	Target Temp	Time
7 gal	131 °F	131 °F	20 min
7 gal	145 °F	145 °F	20 min
7 gal	152 °F	152 °F	60 min
7 gal	168 °F	168 °F	20 min
Starting Mash Thickness: 1.8 qt/lb

Yeast

Wyeast - Irish Ale 1084

Amount:	1.40 Each	Cost:
Attenuation (avg):	73%	Flocculation:	Medium
Optimum Temp:	62 - 72 °F	Starter:	Yes
Fermentation Temp:	-	Pitch Rate:	0.35 (M cells / ml / ° P) 97 B cells required

$ 0.00 Yeast Pitch Rate and Starter Calculator

Priming

CO₂ Level: 2.25 Volumes

Target Water Profile

Balanced Profile

Ca⁺²	Mg⁺²	Na⁺	Cl^-	SO₄^-2	HCO₃^-
60	5	30	92	52	0
Mash Chemistry and Brewing Water Calculator

Notes

Things changed from original:
2-row instead of Isaria
Uk crystal 55L instead of Crystal Dark
added 1 lb of flaked oats
added mash step 145 degrees for 20 min

Last Updated and Sharing

360

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Brews

Public: Yup, Shared
Last Updated: 2026-06-14 12:50 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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Amount	Variety	IBU	Bill %
1.04 oz	Magnum (Pellet)	41.5	79.7%
0.26 oz	East Kent Goldings (Pellet)	1.96	20.3%
1.30 oz / $ 0.00

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Murphy's Iris Stout

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