Assertion: flat sour | /r/HasProperty | caused
Facets:
value: by canning overripe food
type: MANNER
value: usually
type: DEGREE
Source sentences:
text: Flat sour, a type of food spoilage, is caused by canning overripe food or allowing precooked foods to stand in jar too long before processing.
text: Flat sour is usually caused by canning overripe food or allowing precooked foods to stand in jars too long before processing or slow cooling of jars after processing.