Where does “lappapuuro” come from?

lappapuuro (Finnish) comes from Finnish puuro, from Proto-Finnic putro — porridge.

Ancestry of “lappapuuro”, step by step

lappapuuro traces back through two separate lines of ancestry.

via Finnish puuro

StepLanguageWordMeaning
1Finnishpuuroporridge
2Proto-Finnicputroporridge

via Finnish klappa

StepLanguageWordMeaning
1Finnishklappa—
Every word from Proto-Finnic putro →Every word from Finnish puuro →