AG#11 First time decoction and split brew day.

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simco999

AG#11 First time decoction and split brew day.

Post by simco999 » Wed Jun 01, 2011 11:17 am

Due to time constraints at weekends I'm finding I've not had a brew on for a while.

So I decided to do a split brewday. Also I wanted to experiment with decoction. So the steps I did are below. I got this from

http://brewery.org/library/DecoctFAQ.html


* Strike temperature of 53C, stir well and rest for 20 mins
* Stir and take 1/3 of the mash. (If you use a large proportion of unmalted grains you can take less of the mash and add water and dry crushed grains to make up 1/3 of the total volume). Heat to 72C, rest for 20' (malt) to 40' (malt+grains).
* Bring to boil and boil for 15-30'
* Add back to reach a temperature of 65-67C, rest 15-35'
* Take 1/4 of the mash, boil for 15-30'
* Add back to reach a temperature of 70-73C, rest until saccharification is complete (30'-1h).
* No mash-out, start sparge immediately. (I do BIAB so not required.)

Image

Grains

2kg Pilsner malt
2kg Flaked wheat
1kg Wheat malt
250g porridge oats.

Hops
Halletauer Mittelfruh 30g 60 mins
Halletauer Hersbrucker 30g 60 mins

Halletauer Mittelfruh 20g 15 mins
Halletauer Hersbrucker 20g 15 mins

Irish moss 15 mins
Yeast WLP300.

23l at 1050.

I mashed all the grain initially bar the porridge oats. I chucked them in with the decoction (is that the mash or the process???)
I've got to say it smelled lovely when it was boiling - sweet porridge.

Now my last Weiss I did the efficiency was pitiful. (Say it in a Roscoe P. Coltrane type way ) Pitteeeeefulll.

I took a reading after crash cooling some of the wort - 1055!!! Pre-boil!!!

Took it up to the boil and left for 15 mins with the lid on to sanitise.

I will finish the boil tonight.

WishboneBrewery
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Re: AG#11 First time decoction and split brew day.

Post by WishboneBrewery » Wed Jun 01, 2011 9:01 pm

So is the boil boiling now then????

simco999

Re: AG#11 First time decoction and split brew day.

Post by simco999 » Thu Jun 02, 2011 11:44 am

Yes - all done and dusted last night. Slight activity this morning - I'll have a look tonight. :D

I was wildly out with my OG figure. After the boil and cool it came out to 1050. Still very acceptable.

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