Ukrainian
Boil the peeled potatoes in 2 l of salted water for 20 minutes until soft, drain well, let them steam dry for 5 minutes and mash them without any liquid.
Meanwhile fry the onion in 1 tbsp of oil for 5 minutes, add the ground meat, 4 g of salt and the pepper and cook, breaking it up, for 10-12 minutes until browned and dry; let it cool.
Mix the warm mashed potatoes with the egg, flour and remaining salt into a soft, pliable dough.
With floured hands divide the potato dough into 10 portions (about 105 g each), flatten each into a round, put about 2 tbsp (30 g) of filling in the middle and close the edges into an oval patty.
Roll the zrazy in the breadcrumbs.
Fry them in the oil over medium heat for 4-5 minutes per side until deep golden, in two batches, and drain briefly on paper towels.
Serve 2 zrazy per person hot with sour cream and a fresh or pickled vegetable salad.