Well my maternal grandmother lived with us and Zaslav was her original home town. After she married she moved to Proskurov. I have fond memories of her kreplach which she would make once in a while. Since my dad owned a kosher meat market we had many meat meals. If my mother had enough left over brisket then that would be grinded for the filling for the kreplach. I've never associated kreplach with specific regions, rather it was just one of those Jewish foods that were a "take-off" of the gentile treif versions. In that part of Russia (now Ukraine) they have vereniki, while we had kreplach and verenekas (with blueberry filling).
