who the hell keeps their ketchup in the fridge?!
nothing untoward, just the inside of an average Korean's fridge.
Refrigerate after opening .the constant diarrhea ,loud farts and shortness of breath you suffer is due to the Ketchup being rotten for being opened and not refrigerated after first use.
Those who want to preserve it's flavor man...
Ketchup actually tastes better at room temperature, besides, the natural acidity of the vinegar and the salt allow it to remain at room temperature without repercussion.
if its not in a fridge in the shop then why put it in the fridge at home
what about mayo?
mayo isnt ketchup.