Geoff Humphrey's BrewBlog > Recipes > Rockinator [Doppelbock]

Rockinator

Specifics

Style:

Category:	Bock
Number:	05C

A very strong and rich lager. A bigger version of either a traditional bock or a helles bock.

Commercial Examples: Paulaner Salvator, Ayinger Celebrator, Weihenstephaner Korbinian, Andechser Doppelbock Dunkel, Spaten Optimator, Tucher Bajuvator, Weltenburger Kloster Asam-Bock, Capital Autumnal Fire, EKU 28, Eggenberg Urbock 23º, Bell’s Consecrator, Moretti La Rossa, Samuel Adams Double Bock.

Yield:

10 gallons

Color (SRM/EBC):

18.5/36.5

Bitterness (Calc):

24.8 IBU (Rager)

BU/GU:

0.29

Calories:

281 (12 ounces)

ABV:

8.7%

ABW:

6.8%

OG:	1.085
OG (Plato):	20.45° P
FG:	1.020
FG (Plato):	5.08° P
Real Extract:	7.86° P
App. Atten.:	75.2%
Real Atten.:	61.6%

General Information

Method:	All Grain
Source:	Geoff Humphrey

Scale Recipe

Enter desired final yield (volume):

gallons

Malts and Grains

12.00 pounds

German Pilsen Malt (2-Row)

Color (L):	1.5 °L
Info/Use:	Light color, malty flavor. For pilsners, lagers.

35.6% of grist

17.00 pounds

German Dark Munich Malt

Color (L):	9 °L
Info/Use:	Enhances body and aroma. Stout, schwarzbier, brown ale, dark and amber ales.

50.4% of grist

4.00 pounds

German CaraMunich Malt II

Color (L):	45 °L
Info/Use:	Provides body. For Oktoberfest, bock, porter, stout, red, amber and brown ales. Results in increased fullness, heightened aroma, fuller flavor and deep color. Use 5 -10% for darker beers.

11.9% of grist

0.25 pounds

German Acidulated (Sauer) Malt

Color (L):	2.3 °L
Info/Use:	High lactic acid. For lambics, sour mash beers, Irish stout, pilsners and wheats.

0.7% of grist

0.50 pounds

British Pale Chocolate

Color (L):	200 °L
Info/Use:	Used in darker beers such as porters and stouts to add color and richness. May be used in preference to chocolate malt when less color from the grains is desired and a grain with milder flavors is needed.

1.5% of grist

33.75 pounds

Total Grain Weight (Water Amounts

Water Amounts

Target Final Boil Volume:	10 gallons
Evaporation Rate:	1.5 gallons per hour
Boil Time:	90 minutes
Runoff Volume Needed:	12.7 gallons	10 gallons (final boil volume) ÷ 0.96 (cooling) + 2.3 gallons (boil evaporation)
Grain Amount:	33.8 pounds
Grain Absorbtion:	7.2 gallons
Total Water Needed:	20.9 gallons	12.7 gallons (runoff) + 7.2 gallons (grain absorbtion) + 1 gallons (equip. loss)
Mash Water Needed:	11.2 gallons	based on 1.33 quarts per pound of grain
Sparge Water Needed:	9.6 gallons	20.9 gallons (total water) – 11.2 gallons (mash water)

)

100% of grist

Hops

0.85 ounces

Magnum

Region:	Germany
AAU Range:	12 - 14%
Notes:	Clean bittering hop. Bred at the Hop Research Institute in Hull, Germany.
Typical Use:	Bittering.
Substitution:	Columbus, Nugget, Northern Brewer
Example:	Lager, Pilsner, Stout

14.4% Pellets @ 60 minutes
Type: Bittering
Use: Boil

12.2 AAUs

0.50 ounces

Willamette

Region:	United States
AAU Range:	4 - 7%
Notes:	Mild, spicy, grassy, floral aroma.
Typical Use:	Aroma, finishing, dry hopping.
Substitution:	Fuggles
Example:	English-style Ale, Porter

4.4% Pellets @ 30 minutes
Type: Bittering and Aroma
Use: Boil

2.2 AAUs

1.35 ounces

Total Hop Weight

14.4 AAUs

Boil

Total Boil Time:	90 minutes

Total Boil Time:

90 minutes

Yeast

Name:	German Bock Lager
Manufacturer:	White Labs
Product ID:	WLP833
Type:	Lager
Flocculation:	Medium
Attenuation:	73%
Temperature Range:	48–55°F
Amount:	3000 ml

Procedure

Options: Single infusion at 156°F for 60 minutes Double or triple decoction. 90 minute boil. Carbonate to 2.5 volumes.

Options:

Single infusion at 156°F for 60 minutes
Double or triple decoction.

90 minute boil.

Carbonate to 2.5 volumes.

Fermentation

Primary:	14 days @ 50° F
Secondary:	2 days @ 62° F
Lager:	70 days @ 38° F

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