[3] Heinz manufactures all of its tomato ketchup for their USA market at two plants: one in Fremont, Ohio, and the other in Muscatine, Iowa.

[6] Globally, Heinz manufactures ketchup in factories across the world, including the UK and the Netherlands.

[7] Although there is one basic recipe for their ketchup, there are variations tailored to regional regulations, and usually depend on the country where it is manufactured.

[15] In April 2018, Heinz announced the release of "Mayochup", a portmanteau of mayonnaise + ketchup that is a mixture of the two sauces,[16] because more than 500,000 users voted "yes" in a Twitter poll asking Americans if they wanted to see it in stores.

[26] The new sauce received a mixed reception online,[27][28] with Newsweek saying that it "might seem as if Kranch is a flight of fancy from a drunken frat boy" but that some consumers were nevertheless interested.

[33] Mayoreo, a fake product based on this line of sauces, became an internet meme in June 2021.

[37] A small bottle containing about 2.25 ounces (64 g) of ketchup is packaged for room service in hotels or situations where single serving packets associated with fast-food restaurants is undesirable.

In 2012, an alleged scheme to repackage regular Heinz ketchup (which contains high-fructose corn syrup) into bottles with counterfeit labels for "Simply Heinz" (which contains sugar) was discovered when the site was left unattended, after which the ketchup apparently began to ferment and the bottles exploded.

At the time, according to a Heinz spokesman, they were working with the US Food and Drug Administration's Office of Criminal Investigation.