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CZECH DARK LAGER

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Batch size

  • 20 liter(s)
    Expected quantity of finished beer
  • 60 min
    Boil time
  • 10 %/h
    Evaporation rate
  • 25.3 liter(s)
    Boil size
  • 10 %
    Boil loss
  • 10
    Pre-boil gravity BLG
  • 5 %
    Trub loss
  • 0 %
    Dry hopping loss

Mash information

  • 75 %
    Mash efficiency
  • 3.5 liter(s) / kg
    Liquor-to-grist ratio
  • 15.4 liter(s)
    Mash size
  • 19.8 liter(s)
    Total mash volume

Steps

Temp Time
55 C 15 min
63 C 30 min
70 C 30 min
77 C 15 min

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Fermentables

11.2 BLG
4.5% ABV
13.4 SRM
Type Name Amount Yield EBC
Grain Weyermann - Bohemian Pilsner Malt 3.5 kg 79.5% 81 % 4
Grain Weyermann Barke Munich Malt 0.4 kg 9.1% 80 % 22
Grain Słód Caramunich Typ II Weyermann 0.4 kg 9.1% 73 % 120
Grain Weyermann - Carafa III 0.1 kg 2.3% 70 % 1024
Sum 4.4 kg

Hops

34 IBU

Bitterness ratio 0.76 Very bitter

Use for Name Amount Time Alpha acid
Boil Perle 25 g 60 min 6.2 %
Boil Saaz (USA) 80 g 10 min 4.7 %

Yeasts

Name Type Form Amount Laboratory
Mangrove Jack's M84 Bohemian Lager Lager Dry 22 g Mangrove Jack's

Notes

  • https://www.youtube.com/watch?v=cL3wip1MW2g
    Four step double-decoction mash:
    -(Main mash) 131 F (55 C) for 15 min
    -(Decoction) Pull 12 qt (11.5 L) decoction and heat to 152 F (67 C) for 10 min
    -(Main mash) 146 F (63 C) for 30 min
    -(Decoction) Heat decoction to boil and boil for 30 min, then return to main mash
    -(Main mash) 158 F (70 C) for 30 min
    -(Decoction) Pull second 12 qt decoction and boil for 15 min then return to main mash
    -(Main mash) 170 F (77 C) for 15 min
    Nov 21, 2023, 12:11 PM

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