Spike Brewing Giveaway - New v3 Kettle

Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Can i mill my grain too fine?
Thread Tools
Old 08-12-2012, 05:20 PM   #1
Feedback Score: 0 reviews
Join Date: Oct 2008
Location: Jasper IN
Posts: 825
Liked 46 Times on 35 Posts

Default Can i mill my grain too fine?

Uses the title says it all. Can I crush my grain too fine? Other than a stuck sparge, what could happen?

I've been using an el cheapo corona mill for a couple years with no problems, I was just milling today and started wondering.

"Those who dance are considered insane by those who can't hear the music" --George Carlin
captianoats is offline
Reply With Quote
Old 08-12-2012, 05:30 PM   #2
Eternal Tinkerer
Feedback Score: 1 reviews
Join Date: Mar 2012
Location: Sidney, Ohio
Posts: 395
Liked 73 Times on 56 Posts
Likes Given: 51


Yes, Grain can be milled too fine.

The goal is to leave the husks of the grain whole and have just a little bit of flour. It is a good idea to keep some rice hulls in stock, so if you over grind a batch you can throw a pound in to help your sparge.

The only exception I know of is BIAB, where you can use a finer grind because the bag becomes your filter instead of the hulls.

Brewing is science, math, chemistry, biochemics, horticulture and culinary arts rolled into one, yet comes out to become a beautiful smooth sensual thing that brings out the idiot in everyone! - kybar
CGish is offline
Reply With Quote
Old 08-12-2012, 05:31 PM   #3
Feedback Score: 0 reviews
eriktlupus's Avatar
Join Date: Jan 2007
Location: Cereal City, USA
Posts: 2,637
Liked 11 Times on 9 Posts


stuck sparges are the problem when milling too finely. one of the guys(do not remember who its been a couple years since he wrote on here about it) however had luck with misting the grain the day before to allow the husks to soften up and not shred or tear when milling down to .020 on a barley crusher. he was only using like 1-2 oz of water for 10# of grain.
primary1 :UTOPIA BABY(still searching for it)
secondary:middling bastard ipa
kegged:simcoe blonde, crystal pale ale, yellow jacket golden ale, lemon shandy blonde

join michigan mashers here

extraction calculator
grains in pounds(G) X 36(average points per gallon of grains) / batch size in gallons(g) = maximum efficiency(ME)
OG / ME = brewhouse efficiency
eriktlupus is offline
Reply With Quote
Old 08-12-2012, 07:05 PM   #4
Feedback Score: 0 reviews
Join Date: Nov 2009
Location: Reno, NV
Posts: 1,033
Liked 28 Times on 27 Posts
Likes Given: 18


I think the other potentials besides a stuck sparge is effect to sparge efficiency and tannin extraction from the husks.
Frodo is offline
Reply With Quote
Old 08-12-2012, 07:13 PM   #5
Feedback Score: 8 reviews
Join Date: Jan 2012
Location: Key West, Florida
Posts: 5,867
Liked 675 Times on 524 Posts
Likes Given: 758


Before I mill I put all my grains in a bucket and spray them with water while mixing them. It's called conditioning your grains. You only use enough water to make them feel leathery. This lets you get a tighter crush while keeping the hulls intact.
EAC - 5/2/14

Growing Hops in Key West, FL....


Primary : Northern English Brown
Primary :
Primary : empty
On Tap : Mounds Bar Imperial Oatmeal Stout, Sweet and Sour Wit, Imperial Rye Cream Ale
On Deck : Steamboat Willy Cali Common, Rye PA

*Member: The HBT Sweaty Fat Guys Cigar club
KeyWestBrewing is offline
Reply With Quote
Old 08-12-2012, 08:01 PM   #6
Feedback Score: 0 reviews
Join Date: Feb 2009
Posts: 1,776
Liked 79 Times on 64 Posts
Likes Given: 15


Tannin extraction is a measure of pH more than being ground up though. I also think tannin extraction is a remote possibility, and is somewhat of a fallacy that is constantly being spewed on the internet.
Kai Troister (sp) was who recommended the grain conditioning before milling a few years back.

onthekeg is offline
Reply With Quote

Thread Tools

Forum Jump