BrewBlog: RavenWood Kolsch
Specifics
General Information
Method: All Grain

Recipe from Northern Brewer

Kegged the Kolsch on October 1st.  This is one fine Kolsch.

 

Comments

Hit my numbers right on the money.

Fly sparged again, and hit 75% brewhouse efficiency.

Calories, Alcohol, and Plato Calculator
Original Gravity: 1.050
Final Gravity: 1.005
Initial Gravity (Plato): 12.39° P
Final Gravity (Plato): 1.28° P
Real Extract: 3.29° P
Apparent Attenuation: 89.6%
Real Attenuation: 73.4%
Alcohol By Volume (ABV): 6%
Alcohol By Weight (ABW): 4.7%
Calories (12 ounces): 162

Calculations derived from Peter Ensminger's article Beer Data: Alcohol, Calorie, and Attenuation Levels of Beer, here.

Scale Recipe
Enter desired final yield (volume):
 gallons  
Reference
Malts and Grains
Non-Fermentables
2 tabs Whirlfloc @ 15 minutes  
2 tbl Irish Moss @ 15 minutes  
Reference
Hops
Boil
Total Boil Time: 60 minutes
Reference
Yeast
Name: Kolsch Yeast
Manufacturer: Wyeast
Product ID: 2565
Type: Ale
Flocculation: Low
Attenuation: 75%
Temperature Range: 56–64°F
Amount: 250 ml
Mash Profile

Cereal Mash and Single Infusion Mash

Grain Temperature: 72°F Tun Temperature: 72°F
Sparge Temperature: 168°F PH: 5.4
PPG: 28 Efficiency: 77.8%
Notes:

Boil cereal adjuncts to add to infusion mash.

Steps

# Name Type Time Temp. Description
1 Protein Rest Infusion 30 min. 104°F

Add 30% of mash water at 111° F / 44° C

2 Protein Rest Infusion 45 min. 122°F

Add 10% of mash water at 181° F / 83° C

3 Saccharification Infusion 60 min. 150°F

Add 25% of mash water at 200° F / 93° C

4 Mash Out Infusion 10 min. 168°F

Add 35% of mash water at 208° F / 98° C

Procedure
Water Amounts Calculator
Target Final Boil Volume: 11 gallons  
Evaporation Rate: 1.5 gallons per hour  
Boil Time: 60 minutes  
Runoff Volume Needed: 12.96 gallons 11 gallons (final boil volume) ÷ 0.96 (cooling) + 1.5 gallons (boil evaporation)
Grain Amount: 20 pounds  
Grain Absorbtion: 4 gallons  
Total Water Needed: 18.46 gallons 12.96 gallons (runoff) + 4 gallons (grain absorbtion) + 1.5 gallons (equip. loss)
Mash Water Needed: 6.25 gallons based on 1.25 quarts per pound of grain
Sparge Water Needed: 12.21 gallons

18.46 gallons (total water) – 6.25 gallons (mash water)


 

Strike Water Temperature Calculator
Grain Weight: 20 pounds
Grain Temperature: 79° F
Strike Water Amount: 6.25 gallons
Target Mash Temperature: 152° F
Equipment Loss: 0° F
Strike Water Temperature: 163.7° F

YEAST : Wyeast 2575 Kolsch II  2 smack packs

 

Special Procedures

Racked to Secondary on August 26th after 8 days.  Only got 8.5 gallons yield.

Fermentation
Primary: 8 days @ 68° F
Secondary: 7 days @ 64° F
Lager: 30 days @ 40° F
Tasting Reviews
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