Salad ingredient two hundred welcome during broadcast (9)
I believe the answer is:
radicchio
'salad ingredient' is the definition.
(I've seen this before)
'two hundred welcome during broadcast' is the wordplay.
'two hundred' becomes 'cc' (roman numerals).
'welcome' becomes 'hi' (I've seen this in other clues).
'during' indicates putting letters inside.
'broadcast' becomes 'radio' (radio broadcast is a kind of broadcast).
'cc'+'hi'='cchi'
'cchi' put within 'radio' is 'RADICCHIO'.
(Other definitions for radicchio that I've seen before include "leaves bitter taste" , "Variety of chicory - I hid a croc (anag)" , "Salad ingredient" , "Dark-red-leaf salad plant" , "Italian chicory" .)