"Bread of Fatness and Royal Dainties"

I am yet always surprised at differences in traditional practices of piety, probably always shall be.

Was inspired, chanted Ecce Panis... aloud during Communion procession this morning, (often hum or sing so quietly that at most the man next to me is aware - although yesterday one of the celebrants noticed the Ave Verum...) was delighted that some joined in, and after Mass in thanksgiving chose a litany from a book someone had given me, to pray silently.

Had never come across this version of a Litany of the Most Blessed Sacrament -

Wheat of the elect,

     Kind of lovely...

Wine of which virgins are the fruit, 

    Hmmm, odd visual evoked there...

Bread of fatness and royal dainties,

     Okay, wait... WHAT?

Clean oblation,

    Oh, okay, "clean," that's different, not "pure"? or "spotless"? or... where was I?