Using spent grains from an AG beer mash

[Lowie]

Hi Guys,
I'm running a Coopers Pale Ale AG on the weekend and was thinking instead of chucking the spent grains in the bin why not try a whisky mash of sorts and kill two birds with one stone! It's about 5kg of grains. Plan is to add 5kg of sugar, some DAP, a crushed multivitamin, and 50-80gms of bakers yeast. The mash will still be quite hot from the sparge out (I'll just sparge for a bit longer and fill the mash tun up as I'll already have 70deg. Water left in the HLT). Has anyone done this before and can offer advice? Is I the worth even doing it considering a lot of the sugars will have been extracted from the grain in the mash process?
Cheers.

[Minpac]

Most of the sugarhead whiskeys ferment on the grain for more than one generation. I'd suggest your AG beer may have extracted a lot of flavour, but I'm sure there's some left. Throw it in, and maybe toss a couple hundred grams of a strong adjunct grain.

[prawnz]

lowie I dont have any exp personally brewing beer AG but I do drive a semi removing spent grain from commercial breweries . They use their grain only once then it is discarded simply because all the goodness is gone after that .
I collect it and take it to dairy farms , the cows love it and it still contains some proteins that dairy farmers like .

[Zak Griffin]

Plenty of guys make a 'piggyback' sugarhead using the grains from an AG wash :handgestures-thumbupleft: there's still plenty of flavour left in the grain, just no sugars.

Prawnz, commercial breweries don't really have the option of topping up with some sugar and making whiskey like we do at a hobby level ;-)

[prawnz]

Prawnz, commercial breweries don't really have the option of topping up with some sugar and making whiskey like we do at a hobby level ;-)

Yep , wasnt really suggesting anything just offering an observation based on my own experience.

[Lowie]

[quote="Zak Griffin"]Plenty of guys make a 'piggyback' sugarhead using the grains from an AG wash :handgestures-thumbupleft: there's still plenty of flavour left in the grain, just no sugars.

What do you reckon about my calculations then Zak?

[Zak Griffin]

For a 30ish litre wash? Pretty good! Shoot for an SG OF 1070 and see how you go.

[azzman]

if your worried about flavour dont be greedy, go for 8 or 9% wash. the more you try to get out the more the flavour thins out.

i might go a 1.050 wash for about 9%

[tipsy]

I've done a couple of piggyback washes. They are a bit like the UJ of the scotch world.
I do prefer a full all grain Scotch though.

[Lowie]

Cheers, thanks fellas I'll give it a bash. Might go for 4kg sugar as well. :handgestures-thumbupleft: