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Gen 3 UJSSM Questions

PostPosted: Wed Apr 24, 2019 11:33 am
by Matt_Pl
Gday ALL!

I have a couple of questions, based on the fact I'm getting an oak cask for my 40th birthday

1) Does it effect the quality of UJSSM if you split the grain bed over 2 fermenters. I'm currently up to Gen 3 and I use a 200 litre pickled olive rum with a garbage bag as my air lock secured by a jockey strap, works a bloody treat. I'm considering after running gen 3 ( the first two gens were stripped and made a lovely neutral) which will be aged on medium char oak. When going to gen 4 I'm considering splitting the grain bed into 2 fermenters and adding 25% dunder from Gen 3 into each fermenter as well as adding about 2.5kgs of corn and 36 kgs of sugar into each fermenter.

The original recipe was 4.2 kgs of cracked corn and 36kgs of sugar, generations are 36 kgs of sugar and the weight of the spent corn which is removed after each ferment and given to my mate to feed his pigs.

2) My 4 plate bubbler makes a lovely spirit in a single pass, generally from an 70 ish litre wash I get about 5 litres of alcohol after cuts at 67% for ageing purposes. Should I continue to run the bubbler in a single pass, putting away my cuts until I have enough for the oak cask or should I do a couple of stripping runs over 1 plate and then a final run over 4 plates to speed up the process of stripping 400 litres of wash for 20 litres of finally cut alcohol for my oak cask? What would everyone recommend?

Thanks everyone for your feedback, its greatly appreciated.

My setup is as per my profile pic, 18 gallon modified boiler supporting a 4" FSD neutraliser.

Cheers,

Matt.

Re: Gen 3 UJSSM Questions

PostPosted: Wed Apr 24, 2019 12:00 pm
by bluc
Absolutely could split grain. I would keep doing single runs and put it on oak in glass. Once you have enough and your barrel fill it up. Watch for oakiness you may need to remove some and add back new white spirit for 6mnths to stop over oaking

Re: Gen 3 UJSSM Questions

PostPosted: Wed Apr 24, 2019 12:44 pm
by Matt_Pl
Thanks mate, Cheers for the prompt response, I shall do.

Re: Gen 3 UJSSM Questions

PostPosted: Wed Apr 24, 2019 7:16 pm
by RC Al
Mate, you should have plenty of flavors by gen 3, is that corn amount correct? 4.2 kg in a 200l wash? I run mine at equal quantity to the sugar for the first gen, have about 9 litres tall of grain bed in 30l at gen 6

You could try 2-3 plates for more flavor as an option

Re: Gen 3 UJSSM Questions

PostPosted: Wed Apr 24, 2019 8:13 pm
by woodduck
When I fill my barrel I run each generation with a single pass then cut and store in glass until I have enough to fill it then put them all in the barrel so all your gens will be mixed in the end anyway. I don't see the point of owning a bubbler and doing strip runs. May as well use a pot still.

Re: Gen 3 UJSSM Questions

PostPosted: Thu Apr 25, 2019 3:14 pm
by Matt_Pl
Yeah well thats a farkup lol
I have no where near the corn required for these gens.
Next gen I'll add 40 kgs to bring it up to speed.

Thanks everyone.

Re: Gen 3 UJSSM Questions

PostPosted: Thu Apr 25, 2019 5:10 pm
by bluc
I use 20kg bucket ground grain in 200l. Ratios varies it's all ok tend to prefer a higher ratio of corn to other grains..sometimes chuck in couple tins lme caramalt wheat etc...

Re: Gen 3 UJSSM Questions

PostPosted: Thu Apr 25, 2019 5:14 pm
by woodduck
I don't know anything about this UJSSM so can't really comment but 40kg seems like a lot even for 2 200ltr ferments?

On each gen I just take out 5 or so ltrs of grain and refresh with new stuff, I don't replace the lot.

Re: Gen 3 UJSSM Questions

PostPosted: Thu Apr 25, 2019 5:25 pm
by bluc
Oh and only use 25 kg sugar..

Re: Gen 3 UJSSM Questions

PostPosted: Thu Apr 25, 2019 11:12 pm
by Matt_Pl
The recipe I was using for Gen 1 was based on Still its You tube videos.
4.2 kgs of Corn, 4.2 kgs of sugar per 25 litres. I must have been drunk when I started my first Gen.

multiplied the sugar and not the grain..... :angry-banghead: :angry-banghead: :angry-banghead: Mind you Gen 4 was very good : )

I'll add 20 kgs of cracked corn into each fermenter when I push to Gen 4 and see what happens.

Thanks so much for the info : )