BBQ sauce, ketchup, mustard, mayo, etc. are all bought non refrigerated, so why do they need to be refrigerated after they are opened?
In: Biology
When the product is packaged, it is prepared under a sterile environment, and sealed so that the inside of the packaging remains that way.
Once opened, the packaging is no longer sterile and bacteria/etc can enter the package and cause it to spoil
Latest Answers