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May Day

Name: May Day
Prep time: 55 min
Cook time: 60 min
Total time: 115 min
Yield: 35 liters
Cuisine: Homebrewing
Ingredients: 5.9 kg Maris Otter Pale; 300 g Carapils; 130 g Light Crystal; 1100 g Imperial Malt; 200 g CaraRed; 400 g Golden Promise; 22 g magnum Hops; 20 g Simcoe Hops; 8 g Amarillo Hops; 10 g First Gold Hops; 8 g Cascade Hops; 8 g Citra Hops; 9 g Riwaka Hops

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Method: All Grain
Style: American Pale Ale
Boil Time: 60 min
Batch Size: 35 liters (fermentor volume)
Pre Boil Size: 46 liters
Post Boil Size: 40 liters
Pre Boil Gravity: 1.040 (recipe based estimate)
Post Boil Gravity: 1.046 (recipe based estimate)
Efficiency: 65% (brew house)
Source: Rob
Calories: 141 calories (Per 330ml)
Carbs: 15 g (Per 330ml)

Created: Monday May 18th 2026

Session IPA

by Altair

OG: 1.045 FG: 1.011 ABV: 4.5% IBU: 44

Mosaic APA - DOOMINO

by Mazsi

OG: 1.052 FG: 1.013 ABV: 5.2% IBU: 41

Original Gravity:

1.046

Final Gravity:

1.012

ABV (standard):

4.5%

IBU (tinseth):

39.0

SRM (morey):

8.2

Mash pH

5.3

Cost $

n/a

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Fermentables

Amount	Fermentable	PPG	°L	Bill %
5.90 kg	United Kingdom - Maris Otter Pale5.9 kg Maris Otter Pale	38	3.75	73.5%
300 g	German - Carapils300 g Carapils	35	1.3	3.7%
130 g	Simpsons - Light Crystal130 g Light Crystal	34	39	1.6%
1,100 g	Simpsons - Imperial Malt1100 g Imperial Malt	34.5	15.6	13.7%
200 g	Weyermann - CaraRed200 g CaraRed	35	19.3	2.5%
400 g	United Kingdom - Golden Promise400 g Golden Promise	37	3	5%
8,030 g / $ 0.00

Hops

Amount	Variety	Type	AA	Use	Time	IBU	Bill %
22 g	magnum22 g magnum Hops	Pellet	10.7	Boil	60 min	18.63	25.9%
20 g	Simcoe20 g Simcoe Hops	Pellet	13.4	Boil	20 min	12.84	23.5%
8 g	Amarillo8 g Amarillo Hops	Pellet	8.6	Boil	10 min	1.97	9.4%
10 g	First Gold10 g First Gold Hops	Pellet	8.8	Boil	10 min	2.52	11.8%
8 g	Cascade8 g Cascade Hops	Pellet	7	Boil	10 min	1.61	9.4%
8 g	Citra8 g Citra Hops	Pellet	11	Boil	0 min		9.4%
9 g	Riwaka9 g Riwaka Hops	Pellet	5.5	Boil	10 min	1.42	10.6%
85 g / $ 0.00

Show Summary View

Hops Summary

Amount	Variety	IBU	Bill %
22 g	magnum (Pellet) 22 g magnum (Pellet) Hops	18.63	25.9%
20 g	Simcoe (Pellet) 20 g Simcoe (Pellet) Hops	12.84	23.5%
8 g	Amarillo (Pellet) 8 g Amarillo (Pellet) Hops	1.97	9.4%
10 g	First Gold (Pellet) 10 g First Gold (Pellet) Hops	2.52	11.8%
8 g	Cascade (Pellet) 8 g Cascade (Pellet) Hops	1.61	9.4%
8 g	Citra (Pellet) 8 g Citra (Pellet) Hops		9.4%
9 g	Riwaka (Pellet) 9 g Riwaka (Pellet) Hops	1.42	10.6%
85 g / $ 0.00

Mash Guidelines

Amount	Type	Start Temp	Target Temp	Time
52 L	Strike	65 °C	65 °C	45 min
2 L	Sparge	68 °C	58 °C	10 min
Starting Mash Thickness: 6 L/kg

Other Ingredients

Amount	Name	Type	Use	Time
3 g	Calcium Chloride (dihydrate)	Water Agt	Mash	1 hr.
4 g	Epsom Salt	Water Agt	Mash	1 hr.
5 g	Gypsum	Water Agt	Mash	1 hr.
2 g	Salt	Water Agt	Mash	1 hr.
10 ml	CRS/AMS (6.3% HCl, 8.6% H2SO4)	Water Agt	Mash	1 hr.

Yeast

Fermentis - Safale - English Ale Yeast S-04

Amount:	17 Grams	Cost:
Attenuation (custom):	72%	Flocculation:	High
Optimum Temp:	12 - 25 °C	Starter:	No
Fermentation Temp:	-	Pitch Rate:	0.35 (M cells / ml / ° P) 140 B cells required

$ 0.00 Yeast Pitch Rate and Starter Calculator

Priming

CO₂ Level: 2.45 Volumes

Target Water Profile

pale Ale Balanced

Ca⁺²	Mg⁺²	Na⁺	Cl^-	SO₄^-2	HCO₃^-
120	10	30	90	120	22
Mash Chemistry and Brewing Water Calculator

Notes

Brew Day 20/05/26

12ml Lactic acid to 54l water the night before
Pre Boil Gravity 1.039 so added 100g white sugar to boil
og 1.046
fg 1.013
1 x 19l corny, 1 x 10l corny, 6 x bottles
ABV 4.4%

Last Updated and Sharing

Views

Brews

Public: Yup, Shared
Last Updated: 2026-05-30 09:28 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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