Ketchup and Mustard

Ketchup and mustard are not only popular condiments, but highly averse to spoilage, owing to their natural acidity, among other factors. The majority of spoilage bacteria tend to thrive in acid-neutral environments rather than high- or low-acid environments. So, no worries if you leave ketchup or mustard sitting out for awhile during summer barbecues. 

Ketchup and Mustard Shelf Life
Ketchup, opened*1 month8-12 months
Ketchup, unopened1 year- -
Mustard, opened8-12 months8-12 months
Mustard, unopened2 years- -
Handling Tips: 
* Refrigerate ketchup for longer storage.
Boyer, Renee, and Julie McKinney. "Food Storage Guidelines for Consumers." Virginia Cooperative Extension (2009): n. pag. Web. 7 Dec 2009.

"Cupboard Storage Chart." K-State Research and Extension n. pag. Web. 23 Dec 2009. <>. "Food Storage Guidelines" "How to Determine the Shelf Life of Condiments"

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