AG#29 - Naked Imperial Stout (Friday/Saturdays Brew)

[Franklin]

Naked Imperial Stout
Fingers crossed this will work out better than last weekend!
I'm doing an overnight mash for the first time, makes sure I give it lots of time, a more sensible ABV and amount in the Mash tun :)

Fermentables:
Pale Malt 4270g - 75%
Munich Malt 565g - 10%
Chocolate Malt 280g - 5%
Roasted Barley 280g - 5%
Golden Naked Oats 280g - 5%

Hops:
Golding @ 60 mins 71g
Fuggle @ 60 mins 71g
Saaz @ 10 mins 27g

Final Volume: 14 Litres
Original Gravity: 1.090
Final Gravity: 1.026
Alcohol Content: 8.4% ABV
Total Liquor: 24.1 Litres
Mash Liquor: 14.2 Litres
Mash Efficiency: 75 %
Bitterness: 70 EBU
Colour: 349 EBC

Pale malt, chocolate malt, munich malt, roasted barley, naked golden oats, and a Teaspoon of Gypsum:

Mash Paddle could do with a bigger grip, has to be held like a Numpty or you get blisters from stirring:

Centre of Mash Temp after overnight Mash:

Good bit of black stuff first runnings:

140g split between Fuggle & Golding hops for the bittering, Saaz hops for the last 10mins:

Did a third sparge, thanks EcDy for the tips, and collected 10L @ 1020 which I boiled down and added back to the copper and boiled untill just before my pre-boil volume before adding my bittering additions:

F&G going in!!!:

Saaz hops going in:

Temperature Corrected this is OG:1093 :

Nottingham Yeast Pitched dry at about 24-25c
:)

 

[Muddydisco]

Looks good and dark and thick MMMMMM :thumb:

Can I ask why the overnight mash? What extra is it going to give, say than a 2 hr mash?

 

[bolty]

Do like saaz in an Imperial. Gives it a nice sharp quality and helps round it off. :thumb:

Only 6-12 months till you can try it now!

 

[31bb3]

nice brew nice and dark :drink:

 

[Franklin]

Cheers guys :)
The Overnight Mash was to make blooming sure I got a full conversion, as my last Imperial the other week I got really **** efficiency and my pre-boil gravity was way down.

I don't think even this time I was going to get all the sugars out with just the usual 2 batch sparges, first batch was just a 2L top-up and run-off, 2nd was about 10L, then I did a 3rd 10L batch sparge and boiled the lot down to reach the predicted pre-boil volume before adding the hops... It worked out in the end and I was 3 points above my OG :)

 

[Muddydisco]

Ah yes I see now. Seems to have worked this time :thumb:
Hope you can leave it long enough to condition :grin:

 

[Franklin]

Surely a couple of weeks before an early taster

 

[Aleman]

Surely a couple of weeks before an early taster

:nono: :nono: :nono: :nono: Months . . . Months not weeks

 

[Franklin]

Last weeks Imperial's Hydro sample Tasted just like Hard Black Liquorice with a good helping of Alcohol... Obviously needs age! :)

 

[Tony]

Hey Franklin, your overnight mash dropped to 53c, what did it start on the night before? Just wondering if I should try an overnight mash..?

Are there any negative effects from allowing it to sit in a lower temp for a period of time?

:

 

[Franklin]

It started at 67c. As far as I know there are no negative effects.