Substance on corks

Discussion in 'General Wine Making Forum' started by tradowsk, Aug 18, 2019.

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  1. Aug 18, 2019 #1

    tradowsk

    tradowsk

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    I have some bottles of mead aging in my cellar since May, and yesterday I noticed a few bottles have an amber-colored sap-like substance on the exterior of the cork (see photo). The substance is highly viscous (like the sap of a pine tree) and lacks any distinguishable smell or taste. The corks are from my LHBS and are the agglomerated type.

    Any ideas what this could be? I have a theory but I din't want to bias anyone yet.
     

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  2. Aug 18, 2019 #2

    dralarms

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    Looks like their seeping a bit.

    Edit to add: no flavor? Maybe glue?
     
  3. Aug 18, 2019 #3

    cmason1957

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    Is it possible you soaked your corks, even just a little while, before insertion. I had the same thing happen, back when I soaked corks, particularly the agglomerated kind.
     
  4. Aug 18, 2019 #4

    Rice_Guy

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    If someone brought this to the lab my first test would be is it water soluble (likely plant/ bee origin) or is it solvent soluble (possibly a glue or resin).
     
  5. Aug 18, 2019 #5

    tradowsk

    tradowsk

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    @cmason1957 I don't soak the corks, I just dip them in water right before corking to make it easier.

    @Rice_Guy I'll check the solubility of the substance later today.

    My theory was maybe the pressure didn't equalize after corking before I laid the bottles on their side. Thus, there would be positive pressure in the bottle forcing the mead out through the cork (and maybe taking some glue/resin along with it). I'm probably just going to recork these bottles to be safe, but am still interested in finding out what it is.
     
  6. Aug 18, 2019 #6

    tradowsk

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    Update: it is water-soluble.
     
  7. Aug 18, 2019 #7

    Kantuckid

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    taste the stuff and report back...
    I use agglomerated corks, and soak them a few hours in water before insertion, with some campden tabs- no juicy stuff seeping out of corks.
     
  8. Aug 18, 2019 #8

    tradowsk

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    It really had no flavor or smell at all.
     
  9. Aug 19, 2019 #9

    Rice_Guy

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