Imperial IPA – All Grain GONE



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%


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


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


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


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

14 days @ 66° F
14 days @ 70° F
21 days @ 50° F

Seven Seas

Date Brewed:  

Brew Day Data

  Target Actual Notes
Strike Water Amount: 10.3    
Strike Water Temperature:      
Mash Temperature(s):      
Mash Time:      
Sparge Water Amount: 7.3    
Sparge Water Temperature:      
Pre-Boil Gravity:      
Pre-Boil Amount: 11    
Post-Boil Amount: 10    
Boil Time: 90    
OG: 1.082 / 19.8° P    
Mash PH:      
Boil PH:      

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