I certainly believe you. But our McDonald's in town does a fairly decent job with their Filet O' Fish.
Filet of Fish? Not bad for fast food but not like in Iberia.
My first meal was in Bilbao Spain in 1958. Bunch of us midshipmen followed the OOD’s suggestion as to the best restaurant. It was spartan and the only offering that night was stuffed squid boiled in their own ink. Looked horrible but tasted so good we ate all they had. Wonderful!