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What in the World Is That Off-flavor?

After a couple of years brewing I came across one of the biggest difficulties in my brewing to date. A bold, in your face, undeniable off-flavor had plagued my (home) brewhouse. The flavor was medicinal, plastic-like, pool-like and very completely overruling. I lost three 5 gallon batches of homebrew, and this is the story of my quest to find out what was the cause.

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