Where does “mēms-ó-m” come from?

mēms-ó-m (Proto-Indo-European) comes from Proto-Indo-European mḗms, from Proto-Indo-European mems-, from Proto-Indo-European me-ms-, from Proto-Indo-European mes-.

Ancestry of “mēms-ó-m”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	mḗms	flesh, meat
2	Proto-Indo-European	mems-	flesh, meat
3	Proto-Indo-European	me-ms-	—
4	Proto-Indo-European	mes-	—

Every word from Proto-Indo-European mes- →Every word from Proto-Indo-European me-ms- →Every word from Proto-Indo-European mems- →