I'm Polish, and just FYI: pierogi is already plural, the singular form is pieróg, so saying pierogis is like saying fishes or grasses. Also, it's kopytka, with a p, not kobytka. I've never seen or heard of knysza, but maybe it's a regional dish?
H:
Ambrose Cyprian Holt
W:
Esme Guinevere [Williams] Holt
S:
Charlie Lucas Bartholomew Holt
S:
Adam Isaac Rodrigo Holt
D:
Evie Lavinia Ygraine Holt
S:
Peter Jonathan Andrew David Holt
S:
Felix Declan Jay Holt
S & D & D:
Dorian Balthazar Victor Holt &
Kate Philomena Agnes Holt &
Lucy Ophelia Diana Holt