Greasy spoon sold wraps in support of workers (8)
I believe the answer is:
scaffold
'support of workers' is the definition.
'scaffold' can be an answer for 'support' (I've seen this before). I'm unsure of the 'of workers' bit.
'greasy spoon sold wraps' is the wordplay.
'greasy spoon' becomes 'caff' (I've seen this in other clues).
'wraps' means one lot of letters goes inside another (inserted letters get wrapped up).
'caff' inserted into 'sold' is 'SCAFFOLD'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for scaffold that I've seen before include "Platform refreshment" , "Platform on which criminals were once hung" , "Execution platform" , "Temporary erection for workmen - gallows" , "Temporary structure around a building" .)