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Guinness draught clone

Method: All Grain
Style: Dry Stout
Boil Time: 60 min
Batch Size: 20 liters (fermentor volume)
Pre Boil Size: 24 liters
Post Boil Size: 20 liters
Pre Boil Gravity: 1.029 (recipe based estimate)
Post Boil Gravity: 1.041 (recipe based estimate)
Efficiency: 65% (brew house)
Source: Michael Cocks
No Chill: 10 minute extended hop boil time
Calories: 134 calories (Per 12oz)
Carbs: 13 g (Per 12oz)

Created: Tuesday September 30th 2025

Original Gravity:

1.041

Final Gravity:

1.009

ABV (standard):

4.2%

IBU (tinseth):

38.1

SRM (morey):

25.1

Mash pH

5.2

Cost $

39.40

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Fermentables

Amount	Fermentable	Cost	PPG	°L	Bill %
3 kg	Simpsons - Maris Otter pale3 kg Maris Otter pale	$ 7.00 / kg $ 21.00	38	2.4	71.7%
750 g	Blue Lake Milling - Rolled Barley750 g Rolled Barley	$ 6.00 / kg $ 4.50	32	1.7	17.9%
250 g	Barrett Burston - Roasted Barley250 g Roasted Barley - (late mash tun addition)	$ 7.00 / kg $ 1.75	34.5	340	6%
100 g	Barrett Burston - Chocolate Malt100 g Chocolate Malt - (late mash tun addition)	$ 6.95 / kg $ 0.70	34.5	169.19	2.4%
85 g	German - Carafa II85 g Carafa II - (late mash tun addition)	$ 7.00 / kg $ 0.60	32	425	2%
4,185 g / $ 28.54

Hops

Amount	Variety	Cost	Type	AA	Use	Time	IBU	Bill %
40 g	Challenger40 g Challenger Hops	$ 0.10 / g $ 4.00	Pellet	7.1	Boil	30 min	38.06	100%
40 g / $ 4.00

Show Summary View

Amount	Variety	Cost	IBU	Bill %
40 g	Challenger (Pellet) 40 g Challenger (Pellet) Hops	$ 0.10 / g $ 4.00	38.06	100%
40 g / $ 4.00

Mash Guidelines

Amount	Type	Start Temp	Target Temp	Time
21 L	Infusion	70 °C	65 °C	60 min
6 L	Sparge	75 °C	75 °C	15 min
Starting Mash Thickness: 3 L/kg

Other Ingredients

Amount	Name	Cost	Type	Use	Time
4.50 ml	Lactic acid	$ 0.10 / ml $ 0.45	Water Agt	Mash	0 min.
1 g	Calcium Chloride (dihydrate)	$ 0.10 / g $ 0.10	Water Agt	Mash	1 hr.
3 g	Gypsum	$ 0.10 / g $ 0.30	Water Agt	Mash	1 hr.
1 g	Epsom Salt	$ 0.01 / g $ 0.01	Water Agt	Mash	1 hr.
0.20 g	Salt	$ 0.01 / g $ 0.00	Water Agt	Mash	1 hr.
$ 0.86

Yeast

Fermentis - Safale - English Ale Yeast S-04

Amount:	1.50 Each	Cost:	$ 4.00 / each $ 6.00
Attenuation (avg):	75%	Flocculation:	High
Optimum Temp:	12 - 25 °C	Starter:	No
Fermentation Temp:	20 °C	Pitch Rate:	0.35 (M cells / ml / ° P) 72 B cells required

$ 6.00 Yeast Pitch Rate and Starter Calculator

Priming

Method: co2 Amount: 0.28 bar Temp: 6 °C CO₂ Level: 1.65 Volumes

Target Water Profile

Rain Water

Ca⁺²	Mg⁺²	Na⁺	Cl^-	SO₄^-2	HCO₃^-
36	3.7	2.9	22.4	76.4	0
Mash Chemistry and Brewing Water Calculator

Notes

Cold mash dark grains 1hr and add to sparge
Do NOT hot mash dark grains more than 10 mins
Adjust pH for light grains only
5.2 for dry finish
Soft rainwater with minimal salt additions slightly balanced towards calcium for dry mouthfeel.
OG after boil 1.040
FG 9 Oct 1.008

Last Updated and Sharing

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Brews

Public: Yup, Shared
Last Updated: 2025-10-09 01:54 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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