Blueprintc7c0e650-f03a-467a-ae0a-3ba7e259af3a

Autumn Märzen

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Märzen

SRM

Recipe & library

Brew tools

Simulate View Bill

Estimated ABV5.8%

Estimated IBU24Calculated

Estimated OG1.056

Estimated FG1.012

SRM11

Batch5.5gal

Efficiency72%

Boil60min

DIFFICULTY

7/ 10

ADVANCED

Created Mar 28, 2026, 10:00 PMLast updated Jul 15, 2026, 2:47 PM

Technical Requirement

Active Temperature Control Required. This strain (2633) requires precise sub-ambient cooling for clean results. Fermenting above 58°F will produce esters and diacetyl.

Pitch Window

48–58°F

Style Category

BOTTOM-FERMENTED LAGER

Equipment Prerequisites

Fermentation Chamber

Capable of holding 48–58°F (9–14°C) continuously for 2+ weeks

Digital Temperature Controller

e.g. Inkbird ITC-308 or Ranco — ±1°F precision required for 2633

Patience (48+ Days)

Minimum 4 weeks cold conditioning; 6–8 weeks for optimal clarity and malt expression

Increased Pitch Rate

Lager yeast requires 2× standard pitch rate — use 2 packs or prepare a 2L starter

TOTAL 48 DAYS· from stages·3 STAGES·RANGE 32–58°F· from stages

d10

d13

Primary (cool)

Pitch at 48–50°F if possible

50–52°F

10d · 21%

Diacetyl rest

55–58°F

3d · 6%

Lagering

Longer is traditional

32–38°F

35d · 73%

Munich Malt
Base / Malt
7 lb
6°L · 63.6% of bill
Vienna Malt
Malt depth
3 lb
3.5°L · 27.3% of bill
Pilsner Malt
Lighten
1 lb
1.6°L · 9.1% of bill

#	Malt / Adjunct	Lovibond	Grain amount	% of Bill
01	Munich MaltBase / Malt	6°L	7lb	63.6%
02	Vienna MaltMalt depth	3.5°L	3lb	27.3%
03	Pilsner MaltLighten	1.6°L	1lb	9.1%
Total Grain Bill			11.00lb

Bittering (1)

Flavor (1)

Bittering
Hallertau Mittelfrüh
1.25 oz
60 min · +18 IBU
Flavor
Tettnang
0.5 oz
15 min · +6 IBU

#	Type	Hop Variety	Alpha	Time	Amount	IBU
01	Bittering	Hallertau Mittelfrüh	4.5% AA	60 min	1.25oz	+18 IBU
02	Flavor	Tettnang	4% AA	15 min	0.5oz	+6 IBU
Totals					1.75oz	Boil: 24 Post-boil est: — Total est: 24