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Þrumari

Method: All Grain
Style: Roggenbier (German Rye Beer)
Boil Time: 60 min
Batch Size: 49 liters (fermentor volume)
Pre Boil Size: 55.75 liters
Post Boil Size: 49.5 liters
Pre Boil Gravity: 11.4 °P (recipe based estimate)
Post Boil Gravity: 12.8 °P (recipe based estimate)
Efficiency: 65% (brew house)
Source: Bjórsetur Íslands Brugghús
Calories: 157 calories (Per 330ml)
Carbs: 14.3 g (Per 330ml)

Created: Saturday January 17th 2026

Original Gravity:

12.8 °P

Final Gravity:

2.5 °P

ABV (standard):

5.5%

IBU (tinseth):

10.7

SRM (morey):

16.2

Mash pH

5.5

Cost kr

6,107.20

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Fermentables

Amount	Fermentable	Cost	PPG	°L	Bill %
7.50 kg	Weyermann - Rye Malt7.5 kg Rye Malt	kr 600.00 / kg kr 4,500.00	36	3.7	55.6%
2.40 kg	Weyermann - Pilsner2.4 kg Pilsner	kr 230.00 / kg kr 552.00	36	1.5	17.8%
2 kg	Weyermann - Munich Type II (Dark)2 kg Munich Type II (Dark)		37	10	14.8%
0.50 kg	Rice Hulls0.5 kg Rice Hulls		0	0	3.7%
700 g	Weyermann - Caramunich Type 3700 g Caramunich Type 3	kr 390.00 / kg kr 273.00	34	57	5.2%
260 g	Castle Malting - Special B260 g Special B	kr 500.00 / kg kr 130.00	34	150	1.9%
140 g	Weyermann - Carafa Special Type II140 g Carafa Special Type II	kr 730.00 / kg kr 102.20	29.9	425	1%
13.50 kg / kr 5,557.20

Hops

Amount	Variety	Cost	Type	AA	Use	Time	IBU	Bill %
50 g	Artisan - Hallertau Mittelfruh50 g Hallertau Mittelfruh Hops	kr 11.00 / g kr 550.00	Pellet	4	Boil	60 min	10.74	100%
50 g / kr 550.00

Show Summary View

Amount	Variety	Cost	IBU	Bill %
50 g	Artisan - Hallertau Mittelfruh (Pellet)	kr 11.00 / g kr 550.00	10.74	100%
50 g / kr 550.00

Mash Guidelines

Amount	Type	Start Temp	Target Temp	Time
40 L	Strike	74 °C	67 °C	60 min
35 L	Sparge	75 °C	75 °C	15 min
Starting Mash Thickness: 2.86 L/kg Starting Grain Temp: 20 °C

Other Ingredients

Amount	Name	Cost	Type	Use	Time
1 g	Calcium Chloride (dihydrate)		Water Agt	Mash	0 min.
1 g	Gypsum		Water Agt	Mash	0 min.

Yeast

Fermentis - SafAle W-68

Amount:	1 Each	Cost:
Attenuation (avg):	80%	Flocculation:	Low
Optimum Temp:	18 - 26 °C	Starter:	No
Fermentation Temp:	18 °C	Pitch Rate:	0.35 (M cells / ml / ° P) 219 B cells required

kr 0.00 Yeast Pitch Rate and Starter Calculator

Priming

Method: co2 Amount: 3 bar Temp: 15 °C CO₂ Level: 4 Volumes

Target Water Profile

Iceland - avarage

Ca⁺²	Mg⁺²	Na⁺	Cl^-	SO₄^-2	HCO₃^-
11.1	1	10	15.8	8.7	21.3
Mash Chemistry and Brewing Water Calculator

Notes

Ferulic acid rest 45°C - virðist ekki vera í tísku fyrir Roggenbier.

Gerstofnar að prófa: WLP300, G01-Stefon, Safale W-68

Sleppum öllum söltum í þessum

Last Updated and Sharing

Views

Brews

Public: Yup, Shared
Last Updated: 2026-02-21 12:24 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 kr	Cost %
Fermentables	kr
Steeping Grains (Extract Only)	kr
Hops	kr
Yeast	kr
Other	kr
Cost Per Barrel	kr 0.00
Cost Per Pint	kr 0.00
Total Cost	kr 0.00

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