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Iris Oatmeal Stout

Method: All Grain
Style: Oatmeal Stout
Boil Time: 60 min
Batch Size: 5 gallons (fermentor volume)
Pre Boil Size: 8.39 gallons
Post Boil Size: 6.31 gallons
Pre Boil Gravity: 1.051 (recipe based estimate)
Post Boil Gravity: 1.068 (recipe based estimate)
Efficiency: 70% (brew house)
Calories: 228 calories (Per 12oz)
Carbs: 27.1 g (Per 12oz)

Created: Saturday October 25th 2025

Grandma's Secret Stash

by Rothrock Brewing Company

OG: 1.057 FG: 1.014 ABV: 5.8% IBU: 26

BJCP Oatmeal Stout

by schram brothers

OG: 1.056 FG: 1.014 ABV: 5.6% IBU: 32

Little Foot Oatmeal Stout

by Yooper

OG: 1.053 FG: 1.014 ABV: 5.1% IBU: 31

Original Gravity:

1.068

Final Gravity:

1.022

ABV (standard):

6.0%

IBU (tinseth):

31.6

SRM (morey):

40.5

Mash pH

5.4

Cost $

n/a

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Brew Log History

Target 68°F
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Carbs: {{ stats.carbs | number:1 }} g / 12oz

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Fermentables

Amount	Fermentable	PPG	°L	Bill %
8.50 lb	United Kingdom - Maris Otter Pale8.5 lb Maris Otter Pale	38	3.75	60%
2 lb	Flaked Oats2 lb Flaked Oats	33	2.2	14.1%
0.75 lb	American - Chocolate0.75 lb Chocolate	29	350	5.3%
0.75 lb	American - Victory0.75 lb Victory	34	28	5.3%
0.50 lb	American - Black Barley0.5 lb Black Barley	27	530	3.5%
0.50 lb	Caramel / Crystal 60L0.5 lb Caramel / Crystal 60L	34	60	3.5%
9 oz	Rice Hulls9 oz Rice Hulls	0	0	4%
0.60 lb	Flaked Barley0.6 lb Flaked Barley	32	2.2	4.2%
14.16 lbs / $ 0.00

Hops

Amount	Variety	Type	AA	Use	Time	IBU	Bill %
1.50 oz	East Kent Goldings1.5 oz East Kent Goldings Hops	Pellet	5	Boil	60 min	28.21	75%
0.50 oz	East Kent Goldings0.5 oz East Kent Goldings Hops	Pellet	5	Boil	10 min	3.41	25%
2 oz / $ 0.00

Show Summary View

Amount	Variety	Cost	IBU	Bill %
2 oz	East Kent Goldings (Pellet)		31.62	100%
2 oz / $ 0.00

Mash Guidelines

Amount	Type	Start Temp	Target Temp	Time
5.31094 gal	Strike	161 °F	154 °F	60 min
5.09938 gal	Sparge	168 °F	168 °F	15 min
Starting Mash Thickness: 1.5 qt/lb Starting Grain Temp: 68 °F

Other Ingredients

Amount	Name	Type	Use	Time
7 g	Calcium Chloride (dihydrate)	Water Agt	Mash	1 hr.
2 g	Gypsum	Water Agt	Mash	1 hr.
3.50 ml	Lactic acid	Water Agt	Mash	1 hr.

Yeast

White Labs - English Ale Yeast WLP002

Amount:	1 Each	Cost:
Attenuation (avg):	66.5%	Flocculation:	Very High
Optimum Temp:	65 - 68 °F	Starter:	Yes
Fermentation Temp:	68 °F	Pitch Rate:	0.5 (M cells / ml / ° P) 157 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: 2025-12-13 22:22 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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Iris Oatmeal Stout

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