If you, too, are shocked by strawberry ketchup, then what would you say to mushroom ketchup? Or walnut ketchup? Oyster ketchup, anyone? It turns out that the origin of this condiment is no less ancient than that of mustard, but while we would easily recognize ''mustum ardens'' from centuries ago as mustard, we would be hard pressed to recognize original ketchup as ketchup. It has come a long way to become the uniform, thick, red, sweet sauce we know today.
Ketchup began its career somewhere in Southeast Asia as… fish sauce. It was originally made by salting fish blood and innards, as well as whole fish that were too small for any other use, and leaving the whole mess to fermentpickle. The smell must have been overwhelming, but only at the beginning of the process. As the mixture was fermenting, the scent and the taste were becoming milder and more palatable. The liquid thus obtained was a natural source of monosodium glutamate; in other words, a kind of ancient Maggi seasoning. In the Chinese dialect spoken in northern Vietnam, this sauce was called "''kê-tsiap''".
[[File:Fish vs Soy Sauce map.png|thumb|left|upright|Approximate ranges of fermented-sauces usage in East and Southeast Asia<ref>{{Cyt