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Prometheus’ Porter

Method: All Grain
Style: Robust Porter
Boil Time: 60 min
Batch Size: 25 liters (fermentor volume)
Pre Boil Size: 30 liters
Pre Boil Gravity: 1.051 (recipe based estimate)
Post Boil Gravity: 1.064 (recipe based estimate)
Efficiency: 75% (brew house)
Rating:

4.00 (1 Review)

Calories: 197 calories (Per 330ml)
Carbs: 19.7 g (Per 330ml)

Created: Tuesday December 26th 2023

Original Gravity:

1.064

Final Gravity:

1.015

ABV (standard):

6.6%

IBU (tinseth):

33.9

SRM (morey):

31.8

Mash pH

5.5

Cost £

15.03

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Fermentation History

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Carbs: {{ stats.carbs | number:1 }} g / 330ml

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Device Filter
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Fermentables

Amount	Fermentable	Cost	PPG	°L	Bill %
5.50 kg	Bairds - Pale Ale5.5 kg Pale Ale	£ 1.28 / kg £ 7.04	37.2	2.5	77.5%
500 g	Crisp Malting - Crystal Dark - 77L500 g Crystal Dark - 77L		33.1	77	7%
500 g	Crisp Malting - Brown Malt500 g Brown Malt		32.7	65	7%
100 g	Crisp Malting - Black100 g Black - (late mash tun addition)		34.5	600	1.4%
250 g	Crisp Malting - Cara Gold malt250 g Cara Gold malt		34	6	3.5%
250 g	Crisp Malting - Chocolate Malt250 g Chocolate Malt - (late mash tun addition)		32.66	450	3.5%
7,100 g / £ 7.04

Hops

Amount	Variety	Cost	Type	AA	Use	Time	IBU	Bill %
40 g	Challenger40 g Challenger Hops	£ 0.06 / g £ 2.40	Pellet	6.4	Boil	60 min	25.86	45.5%
30 g	Fuggles30 g Fuggles Hops	£ 0.07 / g £ 2.10	Pellet	4.4	Boil	20 min	8.08	34.1%
18 g	Fuggles18 g Fuggles Hops		Pellet	4.4	Boil	0 min		20.5%
88 g / £ 4.50

Show Summary View

Amount	Variety	Cost	IBU	Bill %
40 g	Challenger (Pellet) 40 g Challenger (Pellet) Hops	£ 0.06 / g £ 2.40	25.86	45.5%
48 g	Fuggles (Pellet) 48 g Fuggles (Pellet) Hops	£ 0.07 / g £ 3.36	8.08	54.6%
88 g / £ 5.76

Mash Guidelines

Amount	Type	Start Temp	Target Temp	Time
20 L	Strike	72 °C	65 °C	60 min
7 L	Strike	72 °C	65 °C	60 min
8 L	Batch Sparge	72 °C	--	--
Starting Mash Thickness: 3 L/kg Starting Grain Temp: 20 °C

Other Ingredients

Amount	Name	Type	Use
4 ml	Lactic acid	Water Agt	Mash
2 g	Calcium Chloride (dihydrate)	Water Agt	Mash
1 g	Table Salt	Water Agt	Mash

Yeast

Fermentis - Safale - English Ale Yeast S-04

Amount:	1 Each	Cost:	£ 3.49 / each £ 3.49
Attenuation (avg):	75%	Flocculation:	High
Optimum Temp:	12 - 25 °C	Starter:	No
Fermentation Temp:	-	Pitch Rate:	0.35 (M cells / ml / ° P) 137 B cells required

£ 3.49 Yeast Pitch Rate and Starter Calculator

Priming

Method: co2 CO₂ Level: 1.9 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

485

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Brews

Public: Yup, Shared
Last Updated: 2024-01-27 14:35 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

Discussion about this recipe:

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Md2k • 02/25/2024 at 09:51am

4 of 5

Lovely smooth flavour. I cold mashed the dark grains and then added them to a recirculated mash out and sparge. Has a cold brew coffee essence with minimal acrid or bitter notes.

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Prometheus’ Porter

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