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Old 12-11-2012, 02:55 PM   #1
Brewcrew02
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Default Metallic alkaline taste from starter?

So in 2 separate batches I got a BAD alkaline metallic taste. My first thought was sanitation problems, but I haven't changed sanitary processes between batches so probably not. I'm making starters now to harvest yeast and pitch healthy. Here comes my question... before I started using my new stainless 4qt. to make starter wort I was using a Teflon coated (non-stick of some sort) one before it. It had some scratches, but assumed star san, boiling water, then adding and boiling DME would be ok. So did I get 1) Teflon in the starter 2) leeched metal from exposed scratches 3) infection or 4) all of or a mix of 1, 2, and 3. Thanks for any insight.

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Old 12-11-2012, 10:54 PM   #2
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***crickets***

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"Gave my 500ml Pacman starter that I made last night a hug and wished it a good day before I headed off to work. He's growing up so fast!! Will be a 2liter starter by Saturday and will probably start ignoring me, think he knows it all and end up knocking up some skanky belgain strain before I know it." ~BigTerp
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Old 12-12-2012, 01:35 AM   #3
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Did you taste the starter wort and experience this metallic taste?

That would be the first thing I'd look at. If not, then it's something else in your process.

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Old 12-12-2012, 03:56 AM   #4
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Didn't think to try the starter at the time

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If you love your motorcycle, set it free. If it comes back and hits you, you high sided.

"Gave my 500ml Pacman starter that I made last night a hug and wished it a good day before I headed off to work. He's growing up so fast!! Will be a 2liter starter by Saturday and will probably start ignoring me, think he knows it all and end up knocking up some skanky belgain strain before I know it." ~BigTerp
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Old 12-12-2012, 11:24 PM   #5
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metallic taste is almost always either:

  • impurities in your water,
  • using too many minerals if you're doing water adjustments,
  • or from your equipment (rust, improper passivation, etc.)
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Old 12-13-2012, 05:49 AM   #6
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Quote:
Originally Posted by wolfman_48442 View Post
metallic taste is almost always either:
  • impurities in your water,
  • using too many minerals if you're doing water adjustments,
  • or from your equipment (rust, improper passivation, etc.)
Brewing Friday... here are my adjustments:
- Switching from aluminum to stainless
- PH balance since I'm in Austin (tap water=9.6!!!)
- SMaSH and one of the same yeasts from harvest.
Should be a good test; however I'm not keeping a control so maybe not a good test.
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If you love your motorcycle, set it free. If it comes back and hits you, you high sided.

"Gave my 500ml Pacman starter that I made last night a hug and wished it a good day before I headed off to work. He's growing up so fast!! Will be a 2liter starter by Saturday and will probably start ignoring me, think he knows it all and end up knocking up some skanky belgain strain before I know it." ~BigTerp
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Old 12-13-2012, 02:18 PM   #7
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Quote:
Originally Posted by Brewcrew02 View Post
Brewing Friday... here are my adjustments:
- Switching from aluminum to stainless
- PH balance since I'm in Austin (tap water=9.6!!!)
- SMaSH and one of the same yeasts from harvest.
Should be a good test; however I'm not keeping a control so maybe not a good test.
Sounds a like a good plan but I would use fresh yeast if you are using harvested yeast from the fermented batch. While I am not completely sure, if there were metallic tastes associated with the harvested batch you may bring that unknowingly into the new batch. Using fresh yeast ensures a clean trial.
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Old 12-15-2012, 03:02 AM   #8
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Quote:
Originally Posted by duboman View Post
Sounds a like a good plan but I would use fresh yeast if you are using harvested yeast from the fermented batch. While I am not completely sure, if there were metallic tastes associated with the harvested batch you may bring that unknowingly into the new batch. Using fresh yeast ensures a clean trial.
Sorry I should have clarified... Same yeast strain but from a different harvest where I used my new stainless pot.
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If you love your motorcycle, set it free. If it comes back and hits you, you high sided.

"Gave my 500ml Pacman starter that I made last night a hug and wished it a good day before I headed off to work. He's growing up so fast!! Will be a 2liter starter by Saturday and will probably start ignoring me, think he knows it all and end up knocking up some skanky belgain strain before I know it." ~BigTerp
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