Originally Posted by s/v Jedi
You must have spent time in Holland
which is AFAIK the only country that serves mayo with fries. Others are still without a clue, using vinegar and other disgusting things
The Dutch don't serve Mayo with their fries. They serve "Frietsaus
", a substance that is somewhat, but not entirely unlike mayonnaise.
But they call it Mayonnaise anyway. Strange people the Dutch. You ask for butter in a hotel
or restaurant, you get margarine (often Becel, which I absolutely loathe). You have to ask for "real butter" if you want the real thing.
For it's southern neighbours (the Flemings, basically Dutch brainwashed in to believing they are not) the Dutch have a culinary reputation that is only underbid by the British (in both cases increasingly undeserved).
The southern Dutch (a.k.a Belgians) however do serve mayonnaise with fries. We also double fry the fries, which is why ours are superior to everyone else's. A typical roadside fries stand ("frituur") will have a menu of sauces to accompany your fries, often running in the tens or twenties. Mayonnaise is the most common. "Frietsaus" is increasingly offered to, to placate those Dutch tourists who can't stomach real food
McDonalds in the Netherlands
will give you Frietsaus or Ketchup with your fries, and you pay extra. In Belgium it's Mayonnaise or Ketchup, and it's complementary. In Antwerp I saw McDo serve both Frietsaus and Mayonnaise. Again Dutch tourists are to blame.
(Disclosure: I'm born and raised Flemish, and lived about a decade in Holland, before ending up in the Alps)
(Disclosure #2: And yes, I do have a bit of a cynical view of my birth country, which is not a nation, and which I consider the worst crime the British inflicted upon us. Belgians used to be Dutch, both culturally and geographically. Even the word Belgium and Belgian derive from words that until about 1830 commonly meant "Dutch". 183 years of trying to make a Belgian identity so far has failed to progress beyond making everyone agree that fries need to be served with Mayonnaise...)