National Homebrew Club Ireland

Brewing Discussions => All Grain Brewing => Topic started by: Donny on March 19, 2017, 11:17:51 PM

Title: Mash question
Post by: Donny on March 19, 2017, 11:17:51 PM
I'm considering making a Vienna Lager now that i have temp control.

Been reading up on step mashing and decoction mashing and I'm wondering is there much benefit in doing a BIAB step mash verses a single infusion mash. Would the outcomes be much different?
Title: Re: Mash question
Post by: mr hoppy on March 19, 2017, 11:26:16 PM
It depends on the malt and particularly on how modified it is. To know for sure you need a spec sheet.


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Title: Re: Mash question
Post by: Leann ull on March 19, 2017, 11:50:58 PM
Most modern malts are fully modified so you don't need step mashing.
Title: Re: Mash question
Post by: mr hoppy on March 20, 2017, 12:16:54 AM
Exceptions would be things like floor malted bohemian pilsner malt and munich if you are using it for the vast majority of the grist. Things like wheat and rye can also benefit from step mashing, but pale malt shouldn't be and most lager or pilsner malts don't require it either.

This is a good explanation of the technical concepts:

https://web.archive.org/web/20160811180706/http://www.morebeer.com/brewingtechniques/bmg/noonan.html
Title: Mash question
Post by: Leann ull on March 20, 2017, 02:16:13 AM
Indeed not many use it because it's mad money tho!

(https://uploads.tapatalk-cdn.com/20170320/d8129f13d4e673d60aede99bd889ff1b.jpg)
Title: Re: Mash question
Post by: Donny on March 20, 2017, 10:59:27 AM
My grain bill is just veinna, Munich and some darker grain to get the colour right. So i think il go with the single infusion. Would a Vienna be light or medium bodied?
Title: Mash question
Post by: Leann ull on March 20, 2017, 11:05:42 AM
Is that for your Mash temp?
Vienna L is medium light to medium.
http://byo.com/hops/item/1556-using-munich-vienna-malts-tips-from-the-pros
Title: Re: Mash question
Post by: Donny on March 20, 2017, 11:36:33 AM
Yeah on beersmith. Not sure whether to go with the light bodied or medium bodied BIAB mash profile.
Title: Re: Mash question
Post by: Leann ull on March 20, 2017, 01:25:41 PM
Do you have very accurate control just do a 66?
Title: Re: Mash question
Post by: Donny on March 20, 2017, 01:34:33 PM
I have a PECO boiler combined with an inkbird that should hold the temp. I also have a small mash tun i can use. Trying to get my hands on a false bottom for the boiler or i might try to fashion one.
Title: Re: Mash question
Post by: Leann ull on March 20, 2017, 01:39:17 PM
tricky one that alright go for 67 by the time you finish it will be 64/5
Title: Re: Mash question
Post by: Donny on March 20, 2017, 02:08:12 PM
I got a pump today. I might try to upgrade to a mash circulation system before i do the brew. Also it's only going to be a 10ltr batch.

Currently i loose about 3-4 degrees in a 60min mash.
Title: Re: Mash question
Post by: Leann ull on March 20, 2017, 03:18:39 PM
Go for it your beer will thank you for it.
Have a mess around with some water first.