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ChatGPT - Oatmeal Stout

Method: All Grain
Style: Oatmeal Stout
Boil Time: 60 min
Batch Size: 5 gallons (fermentor volume)
Pre Boil Size: 7 gallons
Pre Boil Gravity: 1.037 (recipe based estimate)
Post Boil Gravity: 1.052 (recipe based estimate)
Efficiency: 60% (brew house)
Source: ChatGPT
Calories: 172 calories (Per 12oz)
Carbs: 17.8 g (Per 12oz)

Created: Thursday February 19th 2026

Oatmeal Stout 1

OG: 1.047 FG: 1.012 ABV: 4.6% IBU: 35

Original Gravity:

1.052

Final Gravity:

1.013

ABV (standard):

5.1%

IBU (tinseth):

42.3

SRM (morey):

43.0

Mash pH

4.6

Cost $

n/a

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Fermentables

Amount	Fermentable	PPG	°L	Bill %
10 lb	American - Pale 2-Row - Toasted10 lb Pale 2-Row - Toasted	33	30	69.9%
1 lb	Flaked Oats1 lb Flaked Oats	33	2.2	7%
13 oz	Briess - Caramel Malt - 40L13 oz Caramel Malt - 40L	35.4	40	5.7%
10 oz	Weyermann - Carafa III10 oz Carafa III - (late boil kettle addition)	32	525	4.4%
18 oz	Munich Malt18 oz Munich Malt	36.8	7.87	7.9%
12 oz	Rice Hulls12 oz Rice Hulls	0	0	5.2%
229 oz / $ 0.00

Hops

Amount	Variety	Type	AA	Use	Time	IBU	Bill %
2 oz	Willamette2 oz Willamette Hops	Pellet	4.5	Boil	60 min	38.4	80%
0.50 oz	Kent Goldings0.5 oz Kent Goldings Hops	Pellet	5	Aroma	10 min	3.87	20%
2.50 oz / $ 0.00

Show Summary View

Amount	Variety	IBU	Bill %
2 oz	Willamette (Pellet)	38.4	80%
0.50 oz	Kent Goldings (Pellet)	3.87	20%
2.50 oz / $ 0.00

Mash Guidelines

Amount	Description	Type	Start Temp	Target Temp	Time
3.75 gal	strike temp 166º	Infusion	--	154 °F	30 min
1 gal	boiling	Infusion	--	158 °F	30 min
2 gal	boiling	Batch Sparge	--	168 °F	10 min
3 gal		Strike	--	168 °F	--
Starting Mash Thickness: 1.5 qt/lb Starting Grain Temp: 68 °F

Other Ingredients

Amount	Name	Type	Use	Time
3 oz	Cocoa powder	Flavor	Boil	10 min.
1 tsp	Yeast Nutrient	Other	Boil	10 min.
1 each	Whirlfloc	Water Agt	Boil	10 min.
4 oz	Cacao Nibs	Flavor	Secondary	5 days

Yeast

Fermentis - Safale - English Ale Yeast S-04

Amount:	1 Each	Cost:
Attenuation (avg):	75%	Flocculation:	High
Optimum Temp:	54 - 77 °F	Starter:	Yes
Fermentation Temp:	64 °F	Pitch Rate:	0.35 (M cells / ml / ° P) 85 B cells required

$ 0.00 Yeast Pitch Rate and Starter Calculator

Priming

CO₂ Level: 1.65 Volumes

Target Water Profile

Greenpoint Brooklyn

Ca⁺²	Mg⁺²	Na⁺	Cl^-	SO₄^-2	HCO₃^-
0	0	0	0	0	0
Chat's best guess is: 1.5 tsp Calcium Chloride 1 tsp Gypsum 1/4 tsp Epsom Salt (optional)
Mash Chemistry and Brewing Water Calculator

Last Updated and Sharing

Views

Brews

Public: Yup, Shared
Last Updated: 2026-02-19 07:23 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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