Imperial IPA – All Grain

Statistics

Comments

Substituted Calypso hops for Crystal.

Compared the last batch with the inspirational brew at five weeks of age. The original was "smoother" - mine had a stronger bitterness bite to it; possibly a combination of fusel alcohols and minerals in the water. Original had more hop aroma and a lighter color. Aside from these three differences, all who sampled (five people), said this was "very close" to the inspirational beer.

This time, I'm reducing the mineral additions and increasing the late hop additions.

As expected the 1272 petered out at 1.024. Added a starter's worth of WLP060 - San Diego Super Yeast to bring things down to where they're supposed to be. 

Not much luck with Wyeast 1272 finishing out - notwithstanding the generous pull I received fresh from the Dry Dock tanks. Perhaps it needs more time than I'm willing to give it, but I can't see any reason not to use WLP001 or the new WLP060. Not much difference in the flavor profile in my opinion.

Malts and Grains

Amount Malt/Grain %
27.00 pounds American Pale Malt (2-Row) 87.1%
1.00 pounds American Victory Malt 3.2%
3.00 pounds German Vienna Malt 9.7%
31.00 pounds Total Grain Weight 100%

Non-Fermentables

Amount Non-Fermentable Time
3 grams Gypsum (Calcium Sulfate) 90 minutes

Hops

Amount Hop Time AA
1.20 ounces Chinook 90 min 13.1%
0.60 ounces Citra 70 min 14.1%
0.50 ounces Columbus 50 min 16.1%
0.65 ounces Calypso 50 min 14.4%
1.00 ounces Challenger 45 min 5.7%
1.00 ounces Columbus 30 min 16.1%
1.00 ounces Cascade 20 min 7.2%
1.00 ounces Chinook 10 min 13.1%
1.50 ounces Challenger 5 min 5.7%
2.50 ounces Cascade 2 min 7.2%
2.00 ounces Columbus 0 min 16.1%
0.80 ounces Chinook 0 min 13.1%
0.90 ounces Citra 0 min 14.1%
0.50 ounces Challenger 0 min 5.7%
0.50 ounces Cascade 0 min 7.2%
15.65 ounces Total Hop Weight

Yeasts

Name Lab/Manufacturer Product ID Amount
American Ale II Wyeast 1272 2000 ml

Equipment Profile 15 Gallon/57 Liter Brew Pot (15) and 10 Gallon/38 Liter Cooler Mash Tun

Mash Profile Single Infusion Mash, Light Bodied Beer, No Mash Out

Notes:

Mash profile for most well-modified malts.

Mash Steps

# Name Time Temp. Description
1 Mash In 75 min. 150°F

Add 100% of mash water at 162° F / 72° C

Water Profile Distilled Water

Special Procedures

Dry hop with the remnants of each fractional ounce of hops plus the designated dry hop addition.

Fermentation and Aging

Primary:
14 days @ 66° F
Secondary:
14 days @ 70° F
Age:
21 days @ 50° F

Seventh Son

Date Brewed: __________________________________
Brewer/Assistant: __________________________________



Brew Day Data

  Target Actual Notes
Str Water Amt: 10.3                                                                                                                 
Str Water Temp:      
Mash Temp:      
Mash Time:      
Sp Water Amt: 9.8    
Sp Water Temp:      
Pre-Boil Grav:      
Pre-Boil Amt: 12.5    
Post-Boil Amt: 10    
Boil Time: 90    
O.G.:      
Mash PH:      
Boil PH: