Well, I'd ended up with loads and loads of grain left over from previous brews which I could've used up on a couple of normal beers, but I decided to use up all in one go and have a go at brewing a massive IPA...
This is mostly inspired by the crazy IPAs which the Americans are producing. I'd had a bottle of Stone Ruination IPA over Christmas and it had blown my face off; in a good way....
So I'd figured that there was no point doing this by halves and therefore there are a lot of hops involved! This cumulated in the a mixture of Goldings, Willamette and Cascade being continually added over the period of the 60minute boil, and a further 75g of Cascade being added to the secondary fermenter. This means that the final product will be over 9% and have about 135 IBUs.....
As well as being a massive beer, this is also the most complicated brew I've ever done. Due to space limitations in the mash tun, and a desire to experiment with something new, I decided to go for a triple decoction mash. In decoction mashing, the mash temperature is raised by pulling a specific amount of the thickest portion of the mash out of the mash tun and boiling for a period of time, and then returning it to the main mash in the tun. This caramelizes some of the sugars, giving the beer a deeper flavor and color, and frees more starches from the grain, making for a more efficient extraction from the grains.
Brew day was quite successful, with my decoctions more or less hitting the correct temperatures and getting a decent extraction from the grain. I pitched a couple of packets of Safale US-5 American Ale yeast, and it was fermenting like crazy the next morning. Now we just have to play the waiting game...
I have included the recipe bellow, in case you are curious!
Brew Type: All Grain |
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Style: Imperial IPA |
Batch Size: 22.50 L |
Boil Volume: 26.80 L |
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Actual Efficiency: 74.67 % |
Boil Time: 60 min
Ingredients
Amount | Item | Type | % or IBU |
4.10 kg | Pale Malt (2 Row) UK (3.0 SRM) | Grain | 42.01 % |
1.67 kg | Munich Malt (9.0 SRM) | Grain | 17.11 % |
1.60 kg | Aromatic Malt (26.0 SRM) | Grain | 16.39 % |
1.30 kg | Caramel/Crystal Malt - 20L (13.2 SRM) | Grain | 13.32 % |
1.00 kg | Cara-Pils/Dextrine (2.0 SRM) | Grain | 10.25 % |
0.09 kg | Special B Malt (180.0 SRM) | Grain | 0.92 % |
50.00 gm | Cascade [5.50 %] (60 min) (First Wort Hop) | Hops | 22.7 IBU |
90.00 gm | Hallertauer Hersbrucker [4.00 %] (60 min) (First Wort Hop) | Hops | 29.7 IBU |
18.00 gm | Goldings, East Kent [5.00 %] (60 min) | Hops | 6.8 IBU |
75.00 gm | Cascade [5.50 %] (Dry Hop 7 days) | Hops | - |
18.00 gm | Goldings, East Kent [5.00 %] (55 min) | Hops | 6.6 IBU |
18.00 gm | Goldings, East Kent [5.00 %] (50 min) | Hops | 6.4 IBU |
20.00 gm | Cascade [5.50 %] (45 min) | Hops | 7.6 IBU |
18.00 gm | Goldings, East Kent [5.00 %] (45 min) | Hops | 6.2 IBU |
30.00 gm | Williamette [5.50 %] (40 min) | Hops | 10.9 IBU |
18.00 gm | Goldings, East Kent [5.00 %] (40 min) | Hops | 5.3 IBU |
18.00 gm | Goldings, East Kent [5.00 %] (35 min) | Hops | 5.6 IBU |
24.00 gm | Cascade [5.50 %] (30 min) | Hops | 7.6 IBU |
24.00 gm | Williamette [5.50 %] (25 min) | Hops | 6.9 IBU |
24.00 gm | Williamette [5.50 %] (20 min) | Hops | 6.0 IBU |
24.00 gm | Cascade [5.50 %] (15 min) | Hops | 4.9 IBU |
24.00 gm | Williamette [5.50 %] (10 min) | Hops | 3.6 IBU |
24.00 gm | Williamette [5.50 %] (5 min) | Hops | 2.0 IBU |
2 Pkgs | Safale US-05 | Yeast-Ale | |
Beer Profile
Measured Original Gravity: 1.096 SG |
Measured Final Gravity: 1.027 SG |
Estimated Color: 18.3 SRM (8.0-15.0 SRM) | Color [Color] |
Bitterness: 138.7 IBU (60.0-120.0 IBU) | Alpha Acid Units: 69.8 AAU |
Alcohol by Volume: 9.06 % |
Calories: 955 cal/l |
Mash Profile
Name: Decoction Mash, Triple |
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Mash Grain Weight: 9.76 kg |
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Grain Temperature: 22.2 C | Sparge Temperature: 75.6 C |
Sparge Water: 15.52 L |
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Name | Description | Step Temp | Step Time |
Step | Add 16.00 L of water at 39.2 C | 36.0 C | 40 min |
Protein Rest |
Add 6.00 L of water at 96.0 C |
50.0 C |
35 min |
Saccharification |
Decoct 5.72 L of mash and boil |
63.0 C |
45 min |
Saccharification |
Decoct 4.16 L of mash and boil |
70.0 C |
45 min |
Mashout
| Decoct 3.67 L of mash and boil | 75.0 C | 40 min |
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