[toolslive]

What happened is that at the end of WW2, the Americans learned about the fries in Belgium, but since the people spoke French, believed to be in France.

Anyway, in Belgium people still use beef fat for the perfect fries.

[LoganCale]

The term "french fried potatoes" was in print as early as 1856. https://en.wikipedia.org/wiki/French_fries#Etymology