Lamb and Potato Pierogi from Domku Cafe. There’s just something about dumplings. From Italian ravioli to Swedish kroppkaka to Tibetan momos, most food cultures around the world have their own signature version of unleavened dough filled with meat, cheese, or vegetables. Eastern Europe enjoys one of the heartiest dumplings of them all: the pierogi. Originally peasant food, pierogi are boiled or fried dumplings often filled with mashed potatoes, sauerkraut, onions, or cheese. They are…