Promote the sale of local American jams (4)
I believe the answer is:
push
'promote' is the definition.
(synonyms)
'sale of local american jams' is the wordplay.
I cannot really see how this works, but
'american' could be 'us' (United States) and 'us' is located in the answer.
'local' could be 'ph' (abbreviation for Public House) and 'ph' is found within the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'the' is the link.
Can you help me to learn more?
(Other definitions for push that I've seen before include "Opposite of pull" , "Exert force on (something)" , "Drive forward" , "Thrust" , "See 8" .)