Munky's Dunkel

Dark Lager

This 2004 BJCP style 4b beer is being brewed for the 2004 AHA Teach a Friend to Homebrew Day. Co-workers David Fruin and Dave Shuman were present at the brew session.

Recipe: Munich Dunkel
Volume: 5 gallons
Dates:

Brew date: Nov 6, 2004
Transfer to secondary: Nov 14, 2004
Bottling/Kegging: Nov 30, 2004

Ingredients:

Water source: basement utility sink filtered dispenser
Yeast: WYeast 2124 Bohemian Lager Yeast (Smack Pack)
Grain bill

Potential
sg pppg Points
per gal
6.6 lbs Briess Traditional Dark LME 1.037
244.2

6.6 lbs Pre-boil:
Target: 244.2
244.2 / 6 gal = 40.7 >>> 1.041
/ 5 gal = 48.8 >>> 1.049

Hops

3/4 oz. German Perle pellet hops - Alpha Acid 6.7% Utilization: 60 minutes @ 1.041 = 25.3%	*IBU = 0.75 6.7 * 25.3 * 0.75 / 5 = 19.1**
1/2 oz. German Tettnanger pellet hops - Alpha Acid 5.8% Utilization: 10 minutes @ 1.041 = 9.2%	*IBU = 0.5 5.8 * 9.2 * 0.75 / 5 = 4.0**
	Total IBU = 23

Activity Log

Boil:

Heated 5 gallons of water to boil. Added malt syrup and brought back to boil. Added bittering hops and boiled for 50 minutes. Added aroma hops and boiled for 10 more minutes. Sanitized cooling coil in iodophor and cooled wort to 75 f. Siphoned into 6.5 gallon fermenter taking specific gravity reading of 1.050.

Fermentation:

Observations of Primary Stage (3 pm start @ 70 f):

17 hours: 1 1/2 inches of foam, 66 bubbles per minute
26 hours: foam ranges from 1 1/2 inches to 3 inches, 70 bubbles per minute
40 hours: 1 inch of foam, 40 bubbles per minute
2 1/2 days: 1/2 inch of foam, 22 bubbles per minute
3 1/2 days: thin foam, 7 bubbles per minute
5 1/2 days: sketchy foam, 2 bubbles per minute
6 1/2 days: clearing foam, 1 bubble every 40 seconds

Siphoned to 5 gallon carboy. Took specific gravity reading of 1.016.

Secondary Stage fermentation temperature ranged from 65 to 67 f.

Bottling/Kegging:

Took specific gravity reading of 1.016 which puts ABV at 4.4%. Boiled 2 ounces of corn sugar in 600 ml of water for 10 minutes. After cooling, placed in bottling bucket and siphoned 2 gallons from carboy into bucket. Filled and capped 20 bottles. Placed at 70 f for conditioning.

Siphoned from carboy into 2 liter bottle until 2/3 full, squeezed air out and pressurized to 30 lb/sq in CO2 to force carbonate. Siphoned remainder from carboy into keg and pressurized to 30 lb/sq in CO2 to force carbonate.

See Munky's Dunkel labels here.

Results:

TBD

	Potential sg pppg	Points per gal
6.6 lbs Briess Traditional Dark LME	1.037	244.2
6.6 lbs	Pre-boil: Target:	244.2 244.2	/ 6 gal = 40.7 >>> 1.041 / 5 gal = 48.8 >>> 1.049