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Oatmeal Stout UKNHBC (MCB)

Method: All Grain
Style: Oatmeal Stout
Boil Time: 60 min
Batch Size: 23.5 liters (fermentor volume)
Pre Boil Size: 28 liters
Post Boil Size: 26 liters
Pre Boil Gravity: 1.050 (recipe based estimate)
Post Boil Gravity: 1.054 (recipe based estimate)
Efficiency: 78% (brew house)
Source: Jon Archer
Hop Utilization: 99%
Calories: 167 calories (Per 330ml)
Carbs: 18.2 g (Per 330ml)

Created: Sunday January 15th 2023

Original Gravity:

1.054

Final Gravity:

1.015

ABV (standard):

5.2%

IBU (tinseth):

25.3

SRM (morey):

46.2

Mash pH

5.5

Cost £

n/a

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Fermentables

Amount	Fermentable	PPG	°L	Bill %
2.85 kg	Crisp Malting - Extra Pale Maris Otter2.85 kg Extra Pale Maris Otter	37.5	2	49.7%
0.80 kg	Flaked Oats0.8 kg Flaked Oats	33	2.2	13.9%
0.33 kg	Crisp Malting - Chocolate Malt0.33 kg Chocolate Malt - (late boil kettle addition)	32.66	450	5.7%
0.28 kg	Crisp Malting - Cara Gold malt0.28 kg Cara Gold malt	34	6	4.9%
0.27 kg	Simpsons - Crystal Medium0.27 kg Crystal Medium	33	65.01	4.7%
0.23 kg	Weyermann - Carafa II0.23 kg Carafa II - (late boil kettle addition)	31.5	415	4%
0.20 kg	Weyermann - Carapils0.2 kg Carapils	34.5	2.1	3.5%
0.20 kg	Rice Hulls0.2 kg Rice Hulls	0	0	3.5%
0.18 kg	Crisp Malting - Wheat Malt0.18 kg Wheat Malt	38.87	2	3.1%
0.15 kg	Crisp Malting - Crystal Extra Dark - 120L0.15 kg Crystal Extra Dark - 120L	35	120	2.6%
0.15 kg	Crisp Malting - Roasted Barley0.15 kg Roasted Barley - (late boil kettle addition)	31.28	520	2.6%
0.10 kg	Weyermann - Carafa III0.1 kg Carafa III - (late mash tun addition)	32	525	1.7%
5.74 kg / £ 0.00

Hops

Amount	Variety	Type	AA	Use	Time	IBU	Bill %
12 g	Magnum12 g Magnum Hops	Leaf/Whole	11	Boil	60 min	12.88	44.4%
15 g	Columbus15 g Columbus Hops	Leaf/Whole	14	Boil	20 min	12.41	55.6%
27 g / £ 0.00

Show Summary View

Amount	Variety	IBU	Bill %
12 g	Magnum (Leaf/Whole) 12 g Magnum (Leaf/Whole) Hops	12.88	44.4%
15 g	Columbus (Leaf/Whole) 15 g Columbus (Leaf/Whole) Hops	12.41	55.6%
27 g / £ 0.00

Mash Guidelines

Amount	Description	Type	Start Temp	Target Temp	Time
13 L		Strike	73 °C	68 °C	60 min
	Mash out	Temperature	68 °C	76 °C	10 min
17 L		Fly Sparge	78 °C	78 °C	45 min
Starting Mash Thickness: 2.5 L/kg

Other Ingredients

Amount	Name	Type	Use	Time
2.50 g	Baking Soda	Water Agt	Mash	1 hr.
5 g	Calcium Chloride (dihydrate)	Water Agt	Mash	1 hr.
2.50 g	Epsom Salt	Water Agt	Mash	1 hr.
1.80 g	Table Salt	Water Agt	Mash	1 hr.
0.50 tsp	Yeast Nutrient	Other	Boil	10 min.
1 each	Protafloc	Fining	Boil	10 min.

Yeast

Wyeast - Irish Ale 1084

Amount:	1 Each	Cost:
Attenuation (avg):	73%	Flocculation:	Medium
Optimum Temp:	17 - 22 °C	Starter:	Yes
Fermentation Temp:	-	Pitch Rate:	1.0 (M cells / ml / ° P) 313 B cells required

£ 0.00 Yeast Pitch Rate and Starter Calculator

Priming

CO₂ Level: 2.2 Volumes

Target Water Profile

1 Pembrokeshire (Bolton Hill - 2027 P22)

Ca⁺²	Mg⁺²	Na⁺	Cl^-	SO₄^-2	HCO₃^-
100	15	15	150	60	75

Mash Chemistry and Brewing Water Calculator

Notes

This is a recipe for a smooth and rounded Oatmeal Stout that is appealing to those that wouldn't ordinarily go for a roast style beer.

Use KCl (potassium) rather than NaCl if you have it
Adjust mash pH to 5.4 with lactic acid

My water profile is soft so needed some of these mineral additions

Add dark grains marked 'late addition' at start of sparge to reduce extraction of bitterness but still adds loads of colour. SRM will be around 38 using this method rather than the 46 indicated from the app.

May require a longer mash period due to borderline diastatic power. Check progress with a refractometer and iodine tests.

I've tried this one with Safale S-04 yeast and using the Irish Ale yeast wins hands down.

Last Updated and Sharing

328

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Brews

Public: Yup, Shared
Last Updated: 2023-03-01 14:20 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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