Hop Dog Imperial IPA - thoughts?

[adm]

Im looking at brewing an Imperial IPA either tomorrow or Monday, but have just gone to the hop fridge to find out I have less Cascade and Amarillo than I thought I had. So.....a few hop substitutions and here's my plan so far. Any thoughts on the hop schedule? I will get some more Amarillo and Cascade next week and will probably dry hop in secondary with 25g of each. Do you think the Aurora and Northdown will clash with the Amarillo and Cascade? ( I imagine the Aurora won't as it's just there for bittering, and the Northdowns aren't normally too floral.)

Hop Dog Imperial IPA

Selected Style and BJCP Guidelines
14C-India Pale Ale(IPA)-Imperial IPA

Minimum OG: 1.070 SG Maximum OG: 1.090 SG
Minimum FG: 1.010 SG Maximum FG: 1.020 SG
Minimum IBU: 60 IBU Maximum IBU: 120 IBU
Minimum Color: 8.0 SRM Maximum Color: 15.0 SRM


Recipe Overview
Volume Of Finished Beer: 23.00 l
Expected Pre-Boil Gravity: 1.062 SG
Expected OG: 1.080 SG
Expected FG: 1.012 SG
Apparent Attenuation: 83.5 %
Expected ABV: 9.0 %
Expected ABW: 7.1 %
Expected IBU (using Tinseth): 105.9 IBU
Expected Color (using Morey): 9.7 SRM
BU:GU ratio: 1.33
Mash Efficiency: 75.0 %
Boil Duration: 90.0 mins
Fermentation Temperature: 21 degC


Fermentables
Ingredient Amount % MCU When
UK Pale Ale Malt 7.500 kg 85.2 % 7.2 In Mash/Steeped
UK Wheat Malt 0.400 kg 4.5 % 0.3 In Mash/Steeped
UK Medium Crystal 0.400 kg 4.5 % 7.7 In Mash/Steeped
Sugar - Candi Sugar Pale 0.500 kg 5.7 % 0.2 Start Of Boil


Hops
Variety Alpha Amount Form When
Slovenian Super Styrian (Aurora) 9.5 % 100 g 77.5 Loose Whole Hops 90 Min From End
UK Northdown 8.0 % 50 g 15.1 Loose Whole Hops 15 Min From End
IBU US Cascade 7.1 % 45 g 12.1 Loose Whole Hops 15 Min From End
US Amarillo 9.6 % 38 g 1.2 Loose Whole Hops 1 Min From End

Other Ingredients
Ingredient Amount When
Protafloc 5 g In Boil
Sodium Metabisulphite 5g in Liquor

Yeast
Wyeast 1332-Northwest Ale
2l starter

Mash Schedule
Mash Type: Full Mash
Schedule Name: Single Step Infusion (66C) 90 minutes.

[Damfoose]

Impressive looks good and im going to add that to my brew schedule.. Hope you dont mind

[adm]

No problem at all - it makes me happy if someone thinks enough of one of my recipes to try the same thing themselves!

I actually brewed this on Monday - so if you're interested, nip over to the Brewdays forum and have a look at the thread.

It's still fermenting - down to just over 1020 now, and it smells absolutely fantastic. I had to taste the hydro sample this morning and almost went back for another one! Tastes gorgeous and smells like lemonsherbetgrapefruitade if there was such a thing...

[mysterio]

Interesting, have you used the Northwest ale yeast before?

[adm]

Nope - never tried it (I've only been brewing since June), but I wanted to do a northwest style strong and ultra hoppy IPA along the lines of the Mikkeller Stateside IPA - and this seemed to fit the bill.

I must admit, I was in the MoreBeer store in California last week on the way to the airport, in a bit of a rush and just picked up a few liquid yeasts almost at random.....so we'll see how it goes. looks good so far - big fluffy clean looking krausen that's been up to the lid of my FV for the last couple of days.