Author Topic: Tinny tasting beer  (Read 1861 times)

Offline duboman

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Tinny tasting beer
« on: March 13, 2016, 03:58:13 PM »
I have a 4 tap kegerator now going on 3 years. About a month or so ago I tapped 4 new kegs of beer and swapped out my empty 20lb tank with a fresh one. Now y beer has a tinny taste to it and the only thing I can point to is the possibility I got a bad tank of co2?

I've been using the same supplier for all the years, local welding supply that only charges me $30 a swap, this is the first time I've ever had a problem.

All the lines were properly cleaned as well as the tapa, etc. When I did the latest refill on the kegs as well as all the kegs.

I'm assuming even if I degas all the kegs and swap with my other tank the off flavor won't go away and I'll have to dump almost 20gal of beer, major league disappointment!

Anyone ever have this issue with co2 causing this problem? Kind of bummed:(

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Offline denny

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Re: Tinny tasting beer
« Reply #1 on: March 13, 2016, 04:02:24 PM »
I've never heard of a bad tank of CO2, let alone gotten one.
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Offline duboman

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Re: Tinny tasting beer
« Reply #2 on: March 13, 2016, 04:46:16 PM »
Thanks Denny,
I suppose then I'm a bit lost.

The beers are an IPA, a pale, a pilsner and a Saison. Each fermented with a different strain and each properly pitched with either rehydrated dry yeast or properly sized starters and my tried and true sanitation/cleaning practices so I'm not sure what else might be the issue.

If it was one keg it'd be easier but all 4 at the same time? WTF!

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Offline Stevie

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Re: Tinny tasting beer
« Reply #3 on: March 13, 2016, 04:49:51 PM »
Water changes?

Offline brewinhard

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Re: Tinny tasting beer
« Reply #4 on: March 13, 2016, 04:50:32 PM »
When you cleaned your liquid lines, you definitely rinsed them well, correct?  Just thinking that leftover residue could cause that off flavor possibly. 

Offline duboman

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Re: Tinny tasting beer
« Reply #5 on: March 13, 2016, 05:25:14 PM »
Nope, no water changes at all and all lines were soaked/flushed with PBW and Star San as well as the kegs, purged of o2. I also removed and soaked the taps as part of the process since it had been a few months since they'd been cleaned thoroughly.

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Offline erockrph

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Re: Tinny tasting beer
« Reply #6 on: March 13, 2016, 06:43:57 PM »
Have you started any new medications recently? Certain antibiotics, high-dose vitamin D, antithyroid, diabetes, and a whole slew of other meds have been implicated in creating a metallic taste in your mouth.
Eric B.

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Offline duboman

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Re: Tinny tasting beer
« Reply #7 on: March 13, 2016, 07:26:49 PM »
That's a good question and fortunately the answer is no, the taste has been picked up by others as well:(

Kind scratching my head on this one....

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« Last Edit: March 13, 2016, 07:28:45 PM by duboman »
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Offline brewinhard

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Re: Tinny tasting beer
« Reply #8 on: March 13, 2016, 07:28:14 PM »
You didn't happen to notice any rust spots on the inside of the kegs did you?  Probably not on all 4 anyway.

Offline duboman

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Re: Tinny tasting beer
« Reply #9 on: March 13, 2016, 07:29:18 PM »
You didn't happen to notice any rust spots on the inside of the kegs did you?  Probably not on all 4 anyway.
No rust anywhere

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Offline brewinhard

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Re: Tinny tasting beer
« Reply #10 on: March 13, 2016, 07:31:10 PM »
Just thinking out loud here trying to come up with some ideas for you.

Offline duboman

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Re: Tinny tasting beer
« Reply #11 on: March 13, 2016, 09:21:28 PM »
Just thinking out loud here trying to come up with some ideas for you.
Everyone's input and questions are much appreciated, the only common thread with all 4 kegs is the co2 but it appears that really can't be the cause.

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Offline klickitat jim

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Re: Tinny tasting beer
« Reply #12 on: March 13, 2016, 10:22:05 PM »
I'll bet there are more than one common denominator.  Same fermentors? Same spigots? Same whirlflock? Malt, hops, transfer tubing etc etc keep digging and you'll find it.

Offline duboman

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Re: Tinny tasting beer
« Reply #13 on: March 13, 2016, 11:00:29 PM »
I'll bet there are more than one common denominator.  Same fermentors? Same spigots? Same whirlflock? Malt, hops, transfer tubing etc etc keep digging and you'll find it.
Going through all my process notes and calendar/schedule tonight to see what might stick out as a possible culprit

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Offline PrettyBeard

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Re: Tinny tasting beer
« Reply #14 on: March 14, 2016, 02:16:47 PM »
Might be coming from an oxidation buildup from the PBW, try running some vinegar through any brass fittings you have in your system.