Where does “kumiperuna” come from?

kumiperuna (Finnish) comes from Finnish peruna, from Swedish jordpäron, from Swedish jord, from Old Swedish iorþ, from Old Norse jǫrð, from Proto-Germanic erþō, from Proto-Indo-European h₁er- — earth.

kumiperuna (Finnish): a potato that has been steamed pre-peeled without rinsing, causing the potato starch remaining on its surface to gelatinize and form a rubbery skin once it's dried

Definitions

a potato that has been steamed pre-peeled without rinsing, causing the potato starch remaining on its surface to gelatinize and form a rubbery skin once it's dried

Ancestry of “kumiperuna”, step by step

kumiperuna traces back through two separate lines of ancestry.

via Finnish peruna

Step	Language	Word	Meaning
1	Finnish	peruna	potato, "Solanum tuberosum"
2	Swedish	jordpäron	potato
3	Swedish	jord	earth, soil; a rock- or sand-based unconsolidated...
4	Old Swedish	iorþ	earth, land
5	Old Norse	jǫrð	earth
6	Proto-Germanic	erþō	earth
7	Proto-Indo-European	h₁er-	earth

via Finnish kumi

Step	Language	Word	Meaning
1	Finnish	kumi	rubber; eraser; condom
2	German	Gummi	rubber, gum; rubber band, elastic band; condom,...
3	Latin	cummi	Alternative form of cummis
4	Ancient Greek	κόμμι	gum, obtained from babul
5	Egyptian	qmy	anointing oil

Every word from Proto-Indo-European h₁er- →