Blueprintc7c0e650-f03a-467a-ae0a-3ba7e259af3a
Autumn Märzen
// REFERENCE_ONLYMärzen
SRM
11
Recipe & library
Brew tools
ABV5.8%
IBU24
OG1.056
FG1.012
SRM11
Batch5.5gal
Efficiency72%
Boil60min
DIFFICULTY
7/ 10
ADVANCEDCreated Mar 28, 2026, 10:00 PMLast updated Mar 29, 2026, 11:53 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·3 STAGES·RANGE 32–58°F
d0
d10
d13
01
Primary (cool)
Pitch at 48–50°F if possible
50–52°F
10d · 21%
02
Diacetyl rest
55–58°F
3d · 6%
03
Lagering
Longer is traditional
32–38°F
35d · 73%
| # | °L | Malt / Adjunct | Grain amount | % of Bill | ||
|---|---|---|---|---|---|---|
| 01 | Munich MaltBase / Malt | 7lb | 63.6% | |||
| 02 | Vienna MaltMalt depth | 3lb | 27.3% | |||
| 03 | Pilsner MaltLighten | 1lb | 9.1% | |||
| Total Grain Bill | 11.00lb | |||||
Bittering (1)
Flavor (1)
| # | Type | Hop Variety | Time | Amount | IBU | |
|---|---|---|---|---|---|---|
| 01 | Bittering | Hallertau Mittelfrüh | 60 min | 1.25oz | +18 IBU | |
| 02 | Flavor | Tettnang | 15 min | 0.5oz | +6 IBU | |
| Totals | 1.75oz | 24IBU | ||||