we had the Kids of Schlitz* as a case study in a business course. I’ll bet that gets supplanted by Bud Light in newer textbooks.
* not the exact title, but where the offspring decided to mess with the recipe. Classic Coke also comes to mind.
I personally think that the “New Coke” was not a mistake but a false flag for misdirection, allowing the mfr to start using HFCS instead of cane sugar in the product.
They “introduced” the New Coke to great fanfare, then brought back “Classic” with HFCS instead, and few could tell the difference, and we who could were poo-pooed about our “imaginary flavor”.
HFCS leaves a vague but distinct dusty taste.