@saab,
In the deepest Catholic part here, where I live, since more than 1000 years, the traditional dish on Good Friday is "Struwen" (a fried yeast pancake with raisins) served after a beer soup, which is the first course of the menu.
(Struwen was ordered by the bishop in 1090 to be the Friday meal on the lent days before Christmas, Easter and Pentecost in abbeys and monasteries. The word's origin is Old Saxon, the bishop emntions in his document that it has been cook by ordinary people since ages.)