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Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > 2nd Batch has bad oxidation/cardboard taste
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Old 01-14-2010, 12:31 AM   #11
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Quote:
Originally Posted by artbrewer View Post
you have to condition the aluminum brewpot before you use it for wort,
boil some water in it for 15-20 min.
this will eliminate any weird taste
+1, fill with tap water and boil until the inside of the pot turns dull and grey. This forms an oxide layer that prevents aluminum from leaching into the acidic wort.
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Old 01-14-2010, 12:50 AM   #12
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I guess I used beer to season my pot.

Thanks guys.

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Old 01-14-2010, 12:57 AM   #13
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Well, it's got to better than seasoning with water! That definitley explains the metallic taste.

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Old 01-14-2010, 12:58 AM   #14
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It should have a clearly visible black-ish coating on the surface once oxidized. This will not scrape off with normal soap and water scrubbing. Make sure it is there before you brew next time!

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Old 01-14-2010, 01:04 AM   #15
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I guess I used beer to season my pot.

Thanks guys.
The wort is acidic, so boiling it may not have seasoned your pot. Did it turn a dull dark grey color?
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Old 01-14-2010, 01:27 AM   #16
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Post fermentation oxidation is probably causing that cardboard taste. Like others stated, when you rack and bottle, make sure you can't see air bubbles swirling your beer around in the racking cane or tubing. This happens to me on every batch am I simply pinch the tube until it catches up with itself and rids the air.

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Old 01-14-2010, 02:20 AM   #17
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The bottom of the pot has alot of dull blotchy areas. But the sides dont look dull.

I rack from a carboy into a bottling bucket using the "blow into carboy cap" (with sanitary filter) method. Didnt see any bubbles.




Well, I'm going to use best practices, and hope this doesnt happen again.
Thanks!

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Old 01-14-2010, 04:05 AM   #18
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Quote:
Originally Posted by triangulum33 View Post
The bottom of the pot has alot of dull blotchy areas. But the sides dont look dull.

I rack from a carboy into a bottling bucket using the "blow into carboy cap" (with sanitary filter) method. Didnt see any bubbles.




Well, I'm going to use best practices, and hope this doesnt happen again.
Thanks!
Looks like the metallic taste is probably from your unseasoned aluminum pot, but I'm not sure how you're getting oxygenated. I assume "with sanitary filter" refers to the air blowing in. You're not filtering the wort right?
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Old 01-14-2010, 04:17 AM   #19
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Looks like the metallic taste is probably from your unseasoned aluminum pot, but I'm not sure how you're getting oxygenated. I assume "with sanitary filter" refers to the air blowing in. You're not filtering the wort right?
Yes. I bought a little kit that had carboy cap, cane and blow filter. Seems to work really good.
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Old 01-14-2010, 09:38 PM   #20
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THE POT WAS PRE FERMENTATION NO?

I don't buy the hot side aspect, oxygen is GOOD pre-fermentation.

Cardboard is oxidation.

How long has it been in the bottle?

I am betting it will clear up with age.

Oxidation gets worse.

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