flat sour


noun
  1. fermentation occurring in canned foods after sealing.

  2. canned food so fermented.

Origin of flat sour

1
First recorded in 1925–30

Words Nearby flat sour

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use flat sour in a sentence

  • "flat sour," perfectly harmless, appears often with inexperienced canners.

    Every Step in Canning | Grace Viall Gray
  • "flat sour" affects peas, beans, asparagus and corn more than other vegetables.

    Every Step in Canning | Grace Viall Gray
  • However, the taste and odor are so disagreeable you will have no desire to eat "flat-sour" canned goods.

    Every Step in Canning | Grace Viall Gray
  • Flat-sour often causes annoyance to beginners in canning some vegetables, such as corn, peas, beans and asparagus.

    Every Step in Canning | Grace Viall Gray
  • This "flat-sour" is not harmful and must not be confused with "botulinus," which is harmful.

    Every Step in Canning | Grace Viall Gray