It wasn't. In those days the diet for 95% of people was grindingly monotonous.
I heard that noble food was diverse and taking influences from many parts of the world, we are not talking about peasant cuisine. Ah, ok, you already told about the nobles. I heard that communism contributed to the unification of Polish cuisine.
Where about in Poland are you from?
I prefer not telling, but I live in Southern Poland.
@jon357