Last year I have made walnuts liqueur, or nocino in Italian.

From the single batch I have obtained 2 liters of liqueur, which I have bottled in dark beer bottles and left to age in the same, dark room.

Now I have noticed that while the liquor in one bottle has achieved the dark brown color typical of the liqueur, in another bottle the liquor is greenish and opaque.

What can have happened?

  • Does it smell bad?
    – Philippe
    Dec 29, 2019 at 3:12
  • A picture or two would be helpful.
    – Kingfisher
    Jan 28, 2020 at 14:20

1 Answer 1


Most likely, contamination has turned your second bottle greenish.


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