Chinese restaurant

After an uneventful day we decide to try the Shanghai restaurant, on the Marszalkowska.

We try to order sevaral meat dishes but after repeated kind denials we are told that there is no meat today because it is Wednesday.

At the time we did not understand, but later on our Polish friends told us that, for some reason that we still do not understand, there is no meat in any restaurant on Wednesdays... I might have understood if Catholic Poland did not serve meat on Fridays, but why Wednesdays?