Here is the girl's head like an exhumed gourd.
Oval-faced, prune-skinned, prune-stones for teeth.
They unswaddled the wet fern of her hair
And made an exhibition of its coil,
Let the air at her leathery beauty.
Pash of tallow, perishable treasure:
Her broken nose is dark as a turf clod,
Her eyeholes blank as pools in the old workings.
Diodorus Siculus confessed
“Pash” is an archaic word for “throw” or “cast down”. So this line suggests that the tallow used will preserve her as she is valuable … but at the same time she could easily be damaged or rot no that she has been exhumed. Note that “perishable treasure” is an  oxymoron  in a poem full of contradictions.
Strange Fruit