There is (obviously, clearly) nothing wrong with “plain,” butter-and-cream-flavored mashed potatoes. They are without flaw. But sometimes, it’s fun to gild the lily, as perfection is not necessarily decadence—to be decadent, one has to lean into excess. That’s what bagna cauda mashed potatoes are—excessive.
source https://skillet.lifehacker.com/make-excessively-decadent-mashed-potatoes-with-bagna-ca-1845748371