# Ketchup

**URL:** <https://boards.straightdope.com/t/ketchup/93516>\
**Category:** Factual Questions\
**Created:** [November 15, 2001, 12:33pm UTC](https://boards.straightdope.com/t/ketchup/93516 "2001-11-15T12:33:21Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![donotprodme](https://avatars.discourse-cdn.com/v4/letter/d/43a26b/32.png) [@donotprodme](https://boards.straightdope.com/u/donotprodme)\
**Post date:** [November 15, 2001, 12:33pm UTC](https://boards.straightdope.com/t/ketchup/93516/1 "2001-11-15T12:33:21Z")

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Does shaking a ketchup bottle really make the Ketchup come out faster. And if so how.

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**Author:** ![SlickUSA](https://avatars.discourse-cdn.com/v4/letter/s/ad7895/32.png) [@SlickUSA](https://boards.straightdope.com/u/SlickUSA)\
**Post date:** [November 15, 2001, 1:00pm UTC](https://boards.straightdope.com/t/ketchup/93516/2 "2001-11-15T13:00:06Z")

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it loosens (not separates) the calloidal gel

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**Author:** ![hibernicus](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/hibernicus/32/2802_2.png) [@hibernicus](https://boards.straightdope.com/u/hibernicus)\
**Post date:** [November 15, 2001, 1:18pm UTC](https://boards.straightdope.com/t/ketchup/93516/3 "2001-11-15T13:18:34Z")

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Yes, ketchup is thixotropic which means you can reduce the viscosity by shaking like a cocktail.