mochadot18: but does Polish 2% milk taste the same as U.S 2% milk??Probably not. I remeber thinking American milk tastes funny. So you may think the same with Polish Milk, there is a lot that can affect the taste.
I recall milk I had in Paris tasting different than the milk I had in Frankfurt and Munich. It also tasted different than milk in Wrocław vs the US.
Diet of the cows, age of the cows, their breed, stress levels, treatment of the milk itself (pasteurization, container, age, whether shelf stable or needing refrigeration, in an opaque or translucent container, etc.) all affect the flavor.