[rectangletangle]

Not quite, I'm referring to american fritessaus, which is more like mayonaise, and distinct from thousand island dressing (which is popular in the US, In-N-Out calls it "spread").

Digging a little deeper it appears like McDonalds may have actually invented the sauce to appeal to the Dutch market, where fritessaus is popular (instead of tomato ketchup). Because McDonalds is American, their take on fritessaus grew into it's own thing called "American Fritessaus," or simply "American Saus."

https://www.hollandsupermarket.eu/remia-fritessaus-american-...

[fl0wenol]

The American Fritessaus is similar to Big Mac sauce because they're both milder takes on Louisiana style remoulade. Which was a spicier version of the traditional topping for fried potatoes in France so it's like it went in a circle.