Polish Dumpling

Puzzle 16 of Spy World Medium Pack

Question is: Polish Dumpling

and the answer is: PIEROGI

Word Meaning:

PIEROGI — (Canada, US) A square- or crescent-shaped dumpling of unleavened dough, stuffed with sauerkraut, cheese, mashed potatoes, cabbage, onion, meat, or any combination of these, or with a fruit filling.

Definitions from Wiktionary.