Where does “viipurinrinkilä” come from?

viipurinrinkilä (Finnish) comes from Finnish rinkilä, from Swedish kringla, from Old Norse kringla, from Proto-Germanic kringaz, from Proto-Indo-European grenǵʰ- — to twist, wind; to turn.

Ancestry of “viipurinrinkilä”, step by step

viipurinrinkilä traces back through two separate lines of ancestry.

via Finnish rinkilä

Step	Language	Word	Meaning
1	Finnish	rinkilä	doughnut
2	Swedish	kringla	pretzel
3	Old Norse	kringla	disk, circle, orb
4	Proto-Germanic	kringaz	ring, circle
5	Proto-Indo-European	grenǵʰ-	to twist, wind; to turn

via Finnish Viipuri

Step	Language	Word	Meaning
1	Finnish	Viipuri	of Vyborg
2	Proto-Germanic	burgz	fortification, stronghold; city
3	Proto-Indo-European	bʰr̥ǵʰ-	—

Every word from Proto-Indo-European grenǵʰ- →Every word from Proto-Germanic kringaz →Every word from Old Norse kringla →