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flat sour

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Definition of flat sour

: fermentation of canned products (as peas or corn) that is caused by thermoduric microorganisms which survive the canning process and that is characterized by the formation of acid without gas sometimes : the off-flavor produced by such fermentation

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“Flat sour.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flat%20sour. Accessed 20 Oct. 2021.

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