Proto-IE: *yew(ǝ)- (Gr zd-)
Meaning: to mix (food), to knead
Old Indian: yāvana- n. 'mixing', yāvya- 'to be joined or mixed'
Old Greek: zdǖ́mǟ f. `Sauerteig'
Celtic: OIr īth `puls'; OCymr iot, Cymr uwd, Bret iod, OCorn iot `Brühe, Brei'
Russ. meaning: перемешивать (пищу), месить
References: WP I 199