Except potato flakes are the Satan's Dandruff!
Some years ago I was with friends and we hit a restaurant that they loved, a family style country place in Hanover, Pennsylvania.
Wendy raved about the mashed potatoes and the corn fritters (which were quite good).
When the potatoes came out I took one bite and ...
Box mix.
Wendy and Dave looked at me, I think both thought I was off my rocker. There were spices and seasonings mixed in, but the underlying flavor was definitely instant potatoes.
When the waitress came back around I flat out asked her -- are these instant potatoes?
She looked at me, grinned, and confirmed that they were instant flakes.
They were good, and the food overall was quite good, but I was kind of surprised that a place that advertised itself as authentic home cooking used instant potatoes.