Food.about.com has not only a great video on how to make packzkis, but they also have a good video on how to make another polish food:
Pierogis.
If you like traditional Italian dishes like gnocchi and ravioli, then you want to consider pierogi: they are closely related. Likewise, paczkis are a form of fried rich bread, much like Berliners and other jam filled pastries.
Give them a try!
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