6-yr old malt - mash test! - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > General Beer Discussion > 6-yr old malt - mash test!

Reply
 
Thread Tools
Old 10-16-2012, 05:10 PM   #1
GotPushrods
 
GotPushrods's Avatar
Recipes 
 
Jul 2012
Phoenix, AZ
Posts: 574
Liked 147 Times on 99 Posts



I see it asked all the time: "How long will uncrushed grain last?" People always chime in... "Oh a year or 2 if you keep it sealed up." I can't say I've ever seen anyone actually test this. Where on earth is this advice coming from?!?!

Well I found a few small sealed bags of 2-row from mid-late 2006. That's 6 years old folks!

Sooooo..... I milled 2 pounds (unknown maltster) 2-row at 0.035". I mashed in 1 gallon of RO water with 1.1 grams CaCl2 and 0.50 ml of 10% phosphoric acid.

Mash was held at 150*F for 45 minutes, and the pH hung around 5.5 room temp (about 5.2 @ mash).

Iodine test passed for conversion after 15 minutes.

Temp-adjusted gravity was 1.057, and I'm ASSuming 36 ppg from the 2-row, or max of 1.072. That's 79% mash efficiency, minus some losses if I were to vorlauf and actually collect.


Will this make good beer? I have no idea. It tasted sweet and smelled amazing. But hey, maybe the finished beer would taste like @$$.

I just thought I'd share, seeing as how this gets asked so often.

Eric

signpost Likes This 
Reply With Quote
Old 10-16-2012, 05:17 PM   #2
IffyG
 
IffyG's Avatar
Recipes 
 
Oct 2009
Nashville
Posts: 1,393
Liked 62 Times on 51 Posts


Quote:
Originally Posted by GotPushrods View Post
Will this make good beer? I have no idea. It tasted sweet and smelled amazing. But hey, maybe the finished beer would taste like @$$.
So are you gonna go the extra mile and make beer out of it? Usually if tastes and smells good, you'll make decent beer...

 
Reply With Quote
Old 10-16-2012, 05:23 PM   #3
GotPushrods
 
GotPushrods's Avatar
Recipes 
 
Jul 2012
Phoenix, AZ
Posts: 574
Liked 147 Times on 99 Posts


Quote:
Originally Posted by IffyG View Post
So are you gonna go the extra mile and make beer out of it? Usually if tastes and smells good, you'll make decent beer...
I probably should... ya know, for science! I think I have enough to make a batch. Maybe something simple and malty?

I'd rather not use any new malt, or cover it up with too many hops. I have probably 5-6 pounds of various 2-row, and about 10 oz of Carafa II. That's it for the old stock.

 
Reply With Quote
Old 10-16-2012, 05:43 PM   #4
JJL
 
JJL's Avatar
Recipes 
 
Feb 2010
, WI
Posts: 1,287
Liked 30 Times on 23 Posts


I don't know that it matters too much what you make as long as it's not too extreme with hops or specialty grains. You have to think real world application. I would think that making a simple amber or cream ale would be a good test. Something with a high percentage of base malt and a low to medium IBU. The reason I say this is because IMO base malt is the most likely malt type to be laying around for extended periods of time. And, it makes up the highest percentage of any grain bill. Also, it's probably the malt type that people are least likely to want to replace since there is so much of it in a recipe. Maybe do a comparison. A recipe using the old malt with new ingredients compared to the same recipe made with new base malt. Nonetheless, it's good of you to share the info.

 
Reply With Quote
Old 10-26-2012, 07:55 PM   #5
GotPushrods
 
GotPushrods's Avatar
Recipes 
 
Jul 2012
Phoenix, AZ
Posts: 574
Liked 147 Times on 99 Posts


I'll get a recipe together and let you guys know how it goes. I've got a few other things on deck coming up (beers and other plans) but maybe within the month this can happen. I'm really interested to know if it will make good beer.... seeing as how everyone always quotes 1-2 years as the shelf life of malt!

 
Reply With Quote
Old 10-26-2012, 08:16 PM   #6
inhousebrew
Recipes 
 
Aug 2012
minneapolis, minnesota
Posts: 1,463
Liked 127 Times on 114 Posts


Interesting indeed. I'd like to know how it turns out since a buddy has a year and half old crushed grain kit sitting around.
__________________
I hate Walder Frey...

 
Reply With Quote
Old 10-26-2012, 09:46 PM   #7
Xpertskir
Recipes 
 
May 2012
Morgantown, Wv
Posts: 2,224
Liked 454 Times on 292 Posts


somewhat useless but interesting none the less. My 250 pound stock of 2-row will be gone within 9 months. I cant see myself needing to buy much more than that.

Thanks for actually testing it, instead of the obligatory "is my grain still good" thread

 
Reply With Quote
Old 10-27-2012, 12:55 AM   #8
bassbone
Recipes 
 
Mar 2008
Cincinnati
Posts: 132
Liked 2 Times on 2 Posts


I'll be interested in seeing how this turns out, and in the very least it will be good to refer people to this to answer the "is my grain still good" threads

 
Reply With Quote
Old 10-27-2012, 01:34 AM   #9
jasonsbeer
 
jasonsbeer's Avatar
Recipes 
 
Jul 2009
Central Iowa
Posts: 390
Liked 24 Times on 14 Posts


This is a good experiment. I have some uncrushed grain that is 1 1/2 years old. I think it is still good.

I believe the only way for grain to go bad would be spoilage (mold) or insect feeding. Someone that works in the grain business might know for sure. Base grains/malts are not like an herb or spice. There would be little to no volitile compounds to disperse. If your grain is stored properly (cool, dry) I think it should be OK for years.

Surely there is someone out there who works in the malt or grain business...
__________________
There are a terrible lot of lies going around the world, and the worst of it is half of them are true.

Winston Churchill

 
Reply With Quote
Old 10-27-2012, 03:40 AM   #10
Calder
Recipes 
 
Mar 2010
Ohio
Posts: 7,592
Liked 624 Times on 546 Posts


'6-yr old malt'


I thought you were talking about Scotch!

I've used specialty grain that was 10 years old (stopped brewing and then started years later), and didn't notice any issue. I would not use it now over concerns that it may hurt the beer and after all the effort I put in it, I don't want to risk a bad beer for a few bucks.

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
When is the best time to test pH of mash? dgez All Grain & Partial Mash Brewing 11 07-13-2012 06:30 PM
How to test your mash with iodine??? SenorHops Beginners Beer Brewing Forum 4 04-02-2012 01:50 PM
What to do when mash is not passing iodine test? Inverted_Giraffe Beginners Beer Brewing Forum 17 11-06-2011 04:14 AM
Unsure about your RA target, do a test mash Kaiser Brew Science 7 06-25-2009 03:13 PM
First test on mash tun 67coupe390 Equipment/Sanitation 11 01-03-2007 04:02 PM


Forum Jump