Where does “ზიმარი” come from?

ზიმარი (Laz) comes from Greek ζυμάρι, from Byzantine Greek ζυμάριον, from Ancient Greek ζύμη, from Ancient Greek ζέω, from Proto-Indo-European yes- — to foam; to boil.

ზიმარი (Laz): undercooked bread

Definitions

undercooked bread

Ancestry of “ზიმარი”, step by step

Step	Language	Word	Meaning
1	Greek	ζυμάρι	yeast; dough
2	Byzantine Greek	ζυμάριον	—
3	Ancient Greek	ζύμη	sourdough; leaven, beer yeast; yeast
4	Ancient Greek	ζέω	to boil, seethe, bubble; to heat
5	Proto-Indo-European	yes-	to foam; to boil

Every word from Proto-Indo-European yes- →Every word from Ancient Greek ζέω →Every word from Ancient Greek ζύμη →