Where does “polvenkakku” come from?

polvenkakku (Ingrian) comes from Ingrian polvi, from Proto-Finnic polvi, from Proto-Uralic polwe — knee.

Ancestry of “polvenkakku”, step by step

polvenkakku traces back through two separate lines of ancestry.

via Ingrian polvi

StepLanguageWordMeaning
1Ingrianpolviknee
2Proto-Finnicpolviknee
3Proto-Uralicpolweknee

via Ingrian kakku

StepLanguageWordMeaning
1Ingriankakkuflatbread
Every word from Proto-Uralic polweEvery word from Proto-Finnic polviEvery word from Ingrian polvi