Spike Brewing 12.5 Conical Fermenter Giveaway - Enter Now!

Home Brew Forums > Food and Beverage > Cooking & Pairing > Did I make malt vinegar?

Reply
 
LinkBack Thread Tools
Old 10-02-2008, 03:13 AM   #1
Anbrew
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2008
Location: Spokane, WA
Posts: 257
Default Did I make malt vinegar?

I recently cracked up an old belgian white I made months ago, as I opened it...I realized it was improperly capped (no hiss, it came off very easily).

I took a drink and...uh...tasted like pure vinegar! Has this ever happened to you?

I think I'm going to use it to make a dressing/marinade of some sort. I guess some mother of vinegar just happened to propogate in this improperly sealed brew?

__________________

My semi-regularly updated beer blog: PremiumBitter
PRIMARY 1: Baltic Porter | WLP001
PRIMARY 2: Chocolate-Spearmint Winter Warmer | WLP028
SECONDARY: Spokane Falls Fresh Hop Ale (IPA) | WLP001/WLP028 (Amarillo/Columbus dry hop)
KEGS:
Liberator Doppelbock
Yellow Marmot Ale (Golden Ale) | WLP001
Yellow Marmot Ale (Golden Ale) | WLP028
UPCOMING: Premium Bitter, Imperial Steam Beer, Strong Scotch Ale, Munich Helles, Schwartz Bier, Rauch Bier

Anbrew is offline
 
Reply With Quote Quick reply to this message
Old 10-02-2008, 06:11 AM   #2
scinerd3000
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2008
Location: Milton, De
Posts: 2,155
Liked 10 Times on 10 Posts
Likes Given: 29

Default

according to wikipedia: Malt vinegar is made by malting barley, causing the starch in the grain to turn to maltose. Then an ale is brewed from the maltose and allowed to turn into vinegar, which is then aged

Havent had this happen to me personally but ill never say never. You basically did what a vinager producer would only by accident. Any other bottles spoil?

__________________
On Hiatus: Brewing at work....
scinerd3000 is offline
 
Reply With Quote Quick reply to this message
Old 10-02-2008, 12:03 PM   #3
EvilTOJ
Feedback Score: 0 reviews
 
EvilTOJ's Avatar
Recipes 
 
Join Date: Dec 2005
Location: Portland, OR, Oregon
Posts: 6,466
Liked 35 Times on 29 Posts
Likes Given: 3

Default

WTF? Now I know wikipedia isn't always right, but come on! Someone's been smoking the cockmonkey before editing articles. wiki also says vinegar is made by oxidation. No. no no no NO NO NO. It is a bacterial process that converts alcohol to vinegar.

If it only happened in that one bottle, to me it sounds like fruit flies got into it. Acetobacter live on the bodies of fruit flies, and just one getting into any alcoholic beverage (or carboy) can ruin the entire thing.

__________________

There is a very fine line between "hobby" and "mental illness."

EvilTOJ is offline
 
Reply With Quote Quick reply to this message
Old 10-02-2008, 12:34 PM   #4
Yooper
Ale's What Cures You!
HBT_ADMIN.png
Feedback Score: 0 reviews
 
Yooper's Avatar
Recipes 
 
Join Date: Jun 2006
Location: Upper Michigan
Posts: 60,683
Liked 4359 Times on 3169 Posts
Likes Given: 848

Default

Quote:
Originally Posted by EvilTOJ View Post
WTF? Now I know wikipedia isn't always right, but come on! Someone's been smoking the cockmonkey before editing articles. wiki also says vinegar is made by oxidation. No. no no no NO NO NO. It is a bacterial process that converts alcohol to vinegar.

If it only happened in that one bottle, to me it sounds like fruit flies got into it. Acetobacter live on the bodies of fruit flies, and just one getting into any alcoholic beverage (or carboy) can ruin the entire thing.
OR, you have a lacto bacterial infection. Lacto infections are common, and makes the beer taste sour but not as "harsh" as vinegar. Think sour milk-ish.

ETJ is right- acetero bacter cause vinegar by infecting the beer. Most commonly it's caused by fruit flies. Lacto infection is a different infection, caused by different bacteria, but it also makes it taste sour.
__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006
Yooper is offline
 
Reply With Quote Quick reply to this message
Old 10-02-2008, 12:53 PM   #5
Beerrific
Feedback Score: 0 reviews
 
Beerrific's Avatar
Recipes 
 
Join Date: Mar 2007
Location: Georgia
Posts: 5,600
Liked 45 Times on 37 Posts
Likes Given: 9

Default

Quote:
Originally Posted by EvilTOJ View Post
WTF? Now I know wikipedia isn't always right, but come on! Someone's been smoking the cockmonkey before editing articles. wiki also says vinegar is made by oxidation. No. no no no NO NO NO. It is a bacterial process that converts alcohol to vinegar.

If it only happened in that one bottle, to me it sounds like fruit flies got into it. Acetobacter live on the bodies of fruit flies, and just one getting into any alcoholic beverage (or carboy) can ruin the entire thing.
It is oxidation in the chemical reaction sense not in the "beer oxidizing" sense. The acetobactor (or brett) will oxidize the ethanol into acetic acid.
__________________
Beerrific is offline
 
Reply With Quote Quick reply to this message
Old 10-02-2008, 12:55 PM   #6
zoebisch01
Feedback Score: 0 reviews
 
zoebisch01's Avatar
Recipes 
 
Join Date: Nov 2006
Location: Central PA
Posts: 5,198
Liked 7 Times on 7 Posts

Default

You'll know an acetic infection. It is sharp and clean, unlike lacto which is more relaxed and mellow. You can probably save that and use it as a mother if you like, there should be evidence of the growth in the beer. It will often form a jelly like cap on or near the surface. Be careful and don't use any of your brew equipment on it (just to stay on the safe side).

If you let it continue to live, then the pH will continue to drop so be careful. It won't be like your supermarket vinegar which is diluted. That will take some time though.

__________________
Event Horizon ~ A tribute to the miracle of fermentation.

Brew what you like. Do this, and you will find your inner brewer.
zoebisch01 is offline
 
Reply With Quote Quick reply to this message
Old 10-02-2008, 09:36 PM   #7
Anbrew
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2008
Location: Spokane, WA
Posts: 257
Default

Very intersting information guys. Yeah it's just this bottle, the cap was barely even on it.

This is definitely a clean and sharp taste. There are some black specs on the bottom of the cap too.

The fruit fly thing has got me terrified. If just one of those buggers touch your wort the whole thing could be infected? They often hover above my airlocks

__________________

My semi-regularly updated beer blog: PremiumBitter
PRIMARY 1: Baltic Porter | WLP001
PRIMARY 2: Chocolate-Spearmint Winter Warmer | WLP028
SECONDARY: Spokane Falls Fresh Hop Ale (IPA) | WLP001/WLP028 (Amarillo/Columbus dry hop)
KEGS:
Liberator Doppelbock
Yellow Marmot Ale (Golden Ale) | WLP001
Yellow Marmot Ale (Golden Ale) | WLP028
UPCOMING: Premium Bitter, Imperial Steam Beer, Strong Scotch Ale, Munich Helles, Schwartz Bier, Rauch Bier

Anbrew is offline
 
Reply With Quote Quick reply to this message
Old 10-03-2008, 08:19 AM   #8
EvilTOJ
Feedback Score: 0 reviews
 
EvilTOJ's Avatar
Recipes 
 
Join Date: Dec 2005
Location: Portland, OR, Oregon
Posts: 6,466
Liked 35 Times on 29 Posts
Likes Given: 3

Default

Quote:
Originally Posted by Anbrew View Post
If just one of those buggers touch your wort the whole thing could be infected? They often hover above my airlocks
In a word, yes. All the more reason to keep your airlocks full.
__________________

There is a very fine line between "hobby" and "mental illness."

EvilTOJ is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Malt vinegar in stout Peregris Recipes/Ingredients 4 09-13-2008 10:19 PM
How do I make Apple Cider Vinegar? Pogo Cider Forum 13 08-03-2008 02:29 PM
how NOT to make vinegar? stinkiestbink Cider Forum 6 11-12-2007 06:01 PM
Malt Vinegar Brewsmith General Beer Discussion 3 01-12-2007 12:08 PM
Homebrewed Malt Vinegar Brewsmith General Beer Discussion 6 09-22-2006 11:29 PM