Where does “keitinpiiras” come from?

keitinpiiras (Finnish) comes from Finnish piiras, from Old East Slavic пирогъ, from Proto-Slavic pirogъ, from Proto-Slavic pirъ — fest; party.

Ancestry of “keitinpiiras”, step by step

keitinpiiras traces back through two separate lines of ancestry.

via Finnish piiras

StepLanguageWordMeaning
1Finnishpiiraspie
2Old East Slavicпирогъ—
3Proto-Slavicpirogъtype of pie?
4Proto-Slavicpirъfest; party

via Finnish keitin

StepLanguageWordMeaning
1Finnishkeitincooker; short for kahvinkeitin; electric kettle
2FinnishkeittääTo boil; to boil over; To cook; To cook up
3Proto-Uralickeje-—
Every word from Proto-Slavic pirъ →Every word from Proto-Slavic pirogъ →Every word from Old East Slavic пирогъ →