Bourbon Barrel Mold Confirmation

Discussion in 'Homebrewing' started by OddNotion, Dec 11, 2021.

  1. OddNotion

    OddNotion Defender (600) Nov 1, 2009 New Jersey

    I had used a 5 gallon bourbon barrel to age 2 beers in which both came out great. After draining the 2nd beer, I didn't have another one ready to go so I filled it with 5 gallons of water with potassium metabisulfate. Unfortunately I was not able to brew for a couple of months and let the barrel sit. I drained it today and it looks like it began growing mold. Before I trash the barrel I wanted to get some confirmation of what I am thinking. The picture below is what I emptied out into my sink. Can anyone confirm if what is floating in the liquid is mold, and if so, is this barrel likely shot?

  2. wasatchback

    wasatchback Devotee (410) Jan 12, 2014 Tajikistan

    Not exactly sure what I’m looking at but next time try adding some citric acid to the storage solution.

    .3g/liter KMeta
    1g/liter Citric Acid

    The critic acid lowers the pH which is necessary to make the potassium metabisulfite antimicrobial.
    Davl22, MrOH and riptorn like this.