Filling father's vehicle with iodine (8)
I believe the answer is:
pastrami
'filling' is the definition.
The answer and definition can be both things that one consumes for nourishment as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'father's vehicle with iodine' is the wordplay.
'father's' becomes 'pa's' (pa can mean dad or father).
'vehicle' becomes 'tram' (tram is a kind of vehicle).
'with' is a charade indicator (letters next to each other).
'iodine' becomes 'I' (I is the chemical symbol for iodine).
'pas'+'tram'+'i'='PASTRAMI'
Can you help me to learn more?
(Other definitions for pastrami that I've seen before include "Seasoned dish" , "Thinly sliced beef" , "Spiced smoked beef" , "beef dish" , "smoked joint" .)