Carbonara - In most European countries/capital cities that are not in/or Italy, all the restaurants I've seen add cream to it which honestly makes the dish even heavier than what it already is, charge quite a lot for a plate, and, in 99% of the cases, you get a subpar, lukewarm pasta dish.

At home, it's very easy to do it well, following the original recipe, it's extremely basic, very few ingredients, and honestly, tastes really awesome!!

Disclaimer: I'm portuguese and a total foodie and pasta dishes are right up my alley, so, YMMV.