Author Topic: Mash/Lauter Tun size and Grain Bed Depth  (Read 5752 times)

Offline leahy268

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Mash/Lauter Tun size and Grain Bed Depth
« on: July 27, 2011, 04:13:41 AM »
Hi Guys,

Heres the thing.  I currently have handy and freely available a 55 L Rectangular cooler to make a Lauter Tun out of. 
I don't plan on making bigger than a 22L or 5 Gal batch of beer at a time.
I have previously been doing some extracts w/ steeping and partial mashes.
However the more I read the more I think why not go the whole hog and do all grain.
The thing is this.  Should I be making the dimensions of my Lauter Tun smaller so that I get a deeper grain bed?
For example building a wall into one side.  Easy enough to do.
Or is there a better way that someone can think of?

Any help you can give me would be great.

Thanks

Warwick

Offline DaveinPa

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Re: Mash/Lauter Tun size and Grain Bed Depth
« Reply #1 on: July 28, 2011, 03:41:45 PM »
My personal opinion is the cylindrical shaped coolers are the best shape.  Some people prefer rectangular.  Smaller is better - match your cooler size to the beer batch size to get a good bed depth.   Normally, you would use about 2/3 to 3/4 of the volume during mashing.  A 5 gal. Igloo works great for 5 gal beer batches - typically about 10lbs of grain and 3.5 gal of water makeup the mash. 

Offline merfizle

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Re: Mash/Lauter Tun size and Grain Bed Depth
« Reply #2 on: July 28, 2011, 04:03:10 PM »
If you batch sparge grain depth doesn't matter.

Mark
Primary: Lambic base for solera barrel
Kegged: Bavarian Weissbier, N. English brown, Roggenbier

Offline DaveinPa

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Re: Mash/Lauter Tun size and Grain Bed Depth
« Reply #3 on: July 28, 2011, 04:22:56 PM »
Even when batch sparging, I still recirculate the first couple quarts of each running to establish a filter bed.  It helps to removes proteins and small suspended particles from the wort before going into the boiling pot.