Some history: FeBo stands for 'Ferdinand Bol', a street in the 'Pijp' district of Amsterdam, where it originated. When I was a small child (1971, 6 yo) we moved into that neighborhood and I remember them from then. My mom expressly forbidding us kids from eating whatever they offered because it was deemed to be just one small notch above garbage.
And I'm not sure that that wasn't on the money with respect to what goes into their frikandellen and kroketten.
But their fries are pretty good.
Too bad we lost Broodje van Kootje to the chains.