Darlene, there are at least three possibilities. (1) Dandelion pollen got into the wine and she had a reaction to it. I have never, ever heard of an allergy to dandelions or their pollen, but admit it is possible. (2) She had a reaction to something else in the environment and the dandelion took the rap. (3) She knew it was dandelion wine and had a hypochondrical reaction. One of my sister-in-laws had a similar reaction to a crabapple wine after my brother told her it was white clover wine. He was trying to prove to her that many of her so-called "allergy attacks" were self-induced. He proved his point, but she is unforgiving to a fault and he has been living in the dog house ever since. Moral of this story: do not make a fool of your spouse if you do not want to live with a fool.
I honestly have difficulty believing your friend's reaction had anything to do with the dandelions, but I have been wrong before.
How does she react to mead? There is potentially far more pollen in mead than dandelion wine, but there should be none in either if the wine was racked a few times and brilliantly clear when bottled.
Jack Keller, The Winemaking Home Page
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