Reducing Mash Out Volume

[Jsta Porter]

Many thanks for the assistance.

I am planing an 11 gal Strong Scotch Ale with a 48QT mash tun. Recipe follows. Since I can not fit the whole grain bill in, I swapped out some grain with DME. I have enough room for the first step of the mash, but lack enough room to mashout with out first running out some of the initial wort.

Question:
In order to accomplish this brew do you see any issue with running out a couple of gallons once the intial step is complete, and then adding the mash out H2O once I have enough room?
Can you see a better way of accomplishing this?

Type: All Grain
Date: 6/3/2009
Batch Size: 11.00 gal
Brewer: Jsta Porter
Boil Size: 14.32 gal Asst Brewer:
Boil Time: 90 min Equipment: Brew Pot 20 gal and Cooler (48 qt)
Taste Rating(out of 50): 35.0 Brewhouse Efficiency: 75.00
Taste Notes:

Ingredients

Amount Item Type % or IBU
3.00 lb Light Dry Extract (8.0 SRM) Dry Extract 10.53 %
25.00 lb Pale Malt (2 Row) UK (3.0 SRM) Grain 87.72 %
0.50 lb Black Barley (Stout) (500.0 SRM) Grain 1.75 %
1.50 oz Northern Brewer [8.50 %] (90 min) Hops 19.6 IBU
1.00 oz Goldings, East Kent [5.40 %] (45 min) Hops 6.4 IBU
2.00 items Irish Moss (Boil 10.0 min) Misc



Beer Profile

Est Original Gravity: 1.074 SG
Measured Original Gravity: 1.010 SG
Est Final Gravity: 1.019 SG Measured Final Gravity: 1.005 SG
Estimated Alcohol by Vol: 7.19 % Actual Alcohol by Vol: 0.65 %
Bitterness: 26.0 IBU Calories: 43 cal/pint
Est Color: 16.0 SRM Color: Color


Mash Profile

Mash Name: Single Infusion, Medium Body Total Grain Weight: 25.50 lb
Sparge Water: 5.20 gal Grain Temperature: 60.0 F
Sparge Temperature: 168.0 F TunTemperature: 100.0 F
Adjust Temp for Equipment: FALSE Mash PH: 5.4 PH

Single Infusion, Medium Body Step Time Name Description Step Temp
60 min Mash In Add 31.88 qt of water at 167.7 F 154.0 F
10 min Mash Out Add 17.85 qt of water at 196.6 F 168.0 F



Mash Notes: Simple single infusion mash for use with most modern well modified grains (about 95% of the time).
Carbonation and Storage

Carbonation Type: Corn Sugar Volumes of CO2: 2.4
Pressure/Weight: 8.3 oz Carbonation Used: -
Keg/Bottling Temperature: 60.0 F Age for: 28.0 days
Storage Temperature: 52.0 F

Notes

Remove 2 gallons first runnings and boil down

 

[wilserbrewer]

Since I can not fit the whole grain bill in...
Can you see a better way of accomplishing this?

30 lbs of grain at 1 qt. / lb is 10 gal. Try small sparge batching or fly it??

 

[Jsta Porter]

Thanks, makes sense. I have not fly sparged before, so was hesistant to do it first time on this batch. I am thinking about skipping the mash out. I have heard some debate on efficacy of the mash out.

I recall, although potentially incorrectly, that 1.25 H2O ratio is the smallest that you should go. Not sure if it is true, or the rational.

 

[HairyDogBrewing]

FWIW, to mash out, I've been running off some wort, boiling it, and adding it back to the mash tun.
It isn't a decoction, per se, because the grain stays in the tun.
It makes less mess that way.

 

[Jsta Porter]

Brilliant! OK, that seems like a great method.

Thanks

 

[Bobby_M]

You don't have to mash out when you're batch sparging. Just get your sparge water up to 185F.

 

[wilserbrewer]

Not really sure...might this be an opportunity to partigyle a second smaller batch of a smaller beer. Or am I just too into getting things free?

 

[CharlosCarlies]

I don't mash out generally...and I definitely wouldn't in your situation. Just use really hot batch sparges as Bobby suggested.

 

[Bobby_M]

Not really sure...might this be an opportunity to partigyle a second smaller batch of a smaller beer. Or am I just too into getting things free?

This is absolutely a fine candidate for partigyle. Just keep sparging and see what the second 6.5 gallons looks like.

 

[wilserbrewer]

This is absolutely a fine candidate for partigyle. Just keep sparging and see what the second 6.5 gallons looks like.

Time out...11 gallon batch here, so a partigyle would actually be more like the third 6.5 gallons? Not sure what might be left in the grains?

 

[Bobby_M]

My bad. I totally missed that fact in the OP. I don't think there would be enough gravity left for a small beer. I missed the part about using DME to make up some of the gravity. I thought this was a 6 gallon batch.