Overnight mash

How to get most out of brewing with your Braumeister? Help others and share your tips/best practices.

Re: Overnight mash

Unread postby BrauTim » Wed Jan 24, 2018 1:30 pm

mashy wrote:I have tried to shorten the brew day. Making it more efficient and 5 hours really is the minimum. I already weigh the grain and set up the BM & associated paraphernalia the night before.

Overnight mash (holding hot) never appealed.

However.... This idea (holding cold) really gets my vote.

The 85c touch is nice. I have a 5l jug. Never suffer fountains and I have a vintage controller. What's not to like.

I am in. Thank you!


The holding cold overnighter only holds at 20C for 3 hours, not exactly holding cold! Can this step be increased from 180 mins?
To brew or not to brew, that would be a stupid question !
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Re: Overnight mash

Unread postby BrauTim » Wed Jan 24, 2018 1:32 pm

Onthebrew wrote:For those that do a manual boil, did you find it was weaker than the corresponding programmed boil? Even at 102 for example. I did when I had to do it once, and I got an explanation from speidal as to why. Can’t remember it off my head but will see if I can dig it out.


Never had a problem with a manual boil set at 102, mine boils exactly the same as auto.
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Re: Overnight mash

Unread postby brugen » Wed Jan 24, 2018 8:42 pm

BrauTim wrote:
mashy wrote:I have tried to shorten the brew day. Making it more efficient and 5 hours really is the minimum. I already weigh the grain and set up the BM & associated paraphernalia the night before.

Overnight mash (holding hot) never appealed.

However.... This idea (holding cold) really gets my vote.

The 85c touch is nice. I have a 5l jug. Never suffer fountains and I have a vintage controller. What's not to like.

I am in. Thank you!


The holding cold overnighter only holds at 20C for 3 hours, not exactly holding cold! Can this step be increased from 180 mins?


If you are doing a single step mash at, say, 66c you could run the first 4 steps at 20C for 180 mins each giving 12 hours before any real power kicks in. Obviously the more "real" steps you do the fewer 20C steps you can do. If I'm doing a multi-step mash I'll dough in early in the evening and switch the BM off. Just before bed I'll switch Brewstart on again and let it run.

One other positive for overnight mashing is that you'll get 2 or 3 extra points of OG for a given grain bill.
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Re: Overnight mash

Unread postby DWP » Thu Jan 25, 2018 12:44 am

Hey guys,

I've been overnight mashing for a couple of years now with the 20Lt BM and it really saves a bunch of time, basically have the brew day down to 2.5hrs. (3hrs if i do a 90min boil )

Night before 930pm:

- weigh grain, mill grain, add salts to grain
- fill BM with water, mash in (~20-25c) check pH add lactic if required
- wait 10mins, check pH
- go to bed

This takes about 30mins

The mashing profile is like this:

20-25c (mashin) - 180mins
52c - 30mins
66c - 90mins
72c - 30mins
76c - 180mins

Including pump breaks the time is 9hrs so i pull the mash pipe between 630-7am

60min boil ( while the boil is on make breakfast and chill )
10min Whirlpool ( get no chill cube rinsed and sanitized )
Transfer to No Chill Cube @ ~ 95c
Clean up

That takes about 2hrs, so cleaned up by 9am.

:beerbang:
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Re: Overnight mash

Unread postby mashy » Thu Jan 25, 2018 9:04 am

Thanks for the timings. Just been working mine out.


Big_O wrote: 3. Plug in unit but leave as is. I setup a program that has a starting mash step temperature of 20C ish, otherwise there is no pump rest whilst the unit gets up to temp and it will fountain.



Didn't really get your point about lack of pump rests and fountains.

Why would there not be a rest?

Why would the lack of a rest cause a fountain?
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Re: Overnight mash

Unread postby Onthebrew » Thu Jan 25, 2018 11:15 am

DWP wrote:Hey guys,

I've been overnight mashing for a couple of years now with the 20Lt BM and it really saves a bunch of time, basically have the brew day down to 2.5hrs. (3hrs if i do a 90min boil )

Night before 930pm:

- weigh grain, mill grain, add salts to grain
- fill BM with water, mash in (~20-25c) check pH add lactic if required
- wait 10mins, check pH
- go to bed

This takes about 30mins

The mashing profile is like this:

20-25c (mashin) - 180mins
52c - 30mins
66c - 90mins
72c - 30mins
76c - 180mins

Including pump breaks the time is 9hrs so i pull the mash pipe between 630-7am

60min boil ( while the boil is on make breakfast and chill )
10min Whirlpool ( get no chill cube rinsed and sanitized )
Transfer to No Chill Cube @ ~ 95c
Clean up

That takes about 2hrs, so cleaned up by 9am.

:beerbang:


Do you top up after the mash or do you mash with full volume of water, or do you top up after in the fermenter?
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Re: Overnight mash

Unread postby Onthebrew » Fri Jan 26, 2018 10:45 pm

Ok went for the 3x 180 minutes @ 20c followed by 90 mins @ 65c then 60 mins 78.

5kg golden promise in 24 litres of water.

So Should be ready mash by 10am tomorrow (Got my sums wrong, was aiming for 9am).

Wacked a weight on top of lid in case of fountains.

Will report back the morrow!
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Re: Overnight mash

Unread postby BrauTim » Sat Jan 27, 2018 1:01 am

I love this thread seems we overnight for many different reasons. Mines is because I am a laissez-faire brewer (or at least I try to be)
To brew or not to brew, that would be a stupid question !
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Re: Overnight mash

Unread postby mashy » Sat Jan 27, 2018 8:02 am

Yeh great thread. I will probably run my first ever overnight this week. (3 x 180/20c) to give me a 9 hour delay.

Might add a camp mat to the insulation. Still don't get why there is any more chance of fountains..?
Last edited by mashy on Sat Jan 27, 2018 2:25 pm, edited 1 time in total.
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Re: Overnight mash

Unread postby BrauTim » Sat Jan 27, 2018 8:21 am

mashy wrote:
Might add a camp mat to the insulation. Still don't get why there is any more chance of fountains..?


Shhhh , it’s one of those brewing myths. Safety first!
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Re: Overnight mash

Unread postby Onthebrew » Sat Jan 27, 2018 11:04 am

Ok mashed out and its now coming up to boil.

It seemed to have caked a bit at the top and I did have quite a bit of come through though in the wort. Just sieved most of it out.

Not sure if it’s do do with the long mash or the fact I’ve used a new supplier for the first time, and unsure what they set the crush at (the home brew company in Ireland) It’s also first time using golden promise.
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Re: Overnight mash

Unread postby mashy » Sat Jan 27, 2018 2:28 pm

I have a tried and tested cascade recipe. That I am not changing in any way except for the overnight timings.

Will the extended mash be more efficient?
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Re: Overnight mash

Unread postby DWP » Thu Feb 01, 2018 1:57 am

:beerbang:[/quote]

Do you top up after the mash or do you mash with full volume of water, or do you top up after in the fermenter?[/quote]


I generally mash with 25-26lts and target 20lts into the no chill cube. SO, a rinse/sprage of teh grains with 2-3lts is genrally used.

I've done full volume but found that the grains needs a good rinse to get the right preboil gravity / final gravity . Plus there is no time savings from full volume.
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Re: Overnight mash

Unread postby mashy » Thu Feb 01, 2018 6:15 am

I top up the FV.
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Re: Overnight mash

Unread postby Onthebrew » Thu Feb 01, 2018 3:19 pm

Actaully noticed In James Mortons brew book, he follows mashys School of thought, and suggests topping up in FV for all his recipes, so you always hit your target OG

ive still yet to try it, but will give it a go at some stage.

in terms of efficiency of overnight mashing, it must have been well up as my OG was 4 or 5 points above usual
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