Starter of broth on first course - the fourth has duck in nice restaurant (6)
I believe the answer is:
bistro
'duck in nice restaurant' is the definition.
'bistro' can be an answer for 'restaurant' (bistro is a kind of restaurant). I'm not sure about the 'duck in nice' bit.
'starter of broth on first course the fourth' is the wordplay.
'starter of' suggests taking the first letters.
'on' means one lot of letters go next to another.
'first' becomes 'ist'.
'course the fourth' becomes 'ro' (I can't explain this - if you can you should believe this answer much more).
The initial letter of 'broth' is 'b'.
'b'+'ist'+'ro'='BISTRO'
'has' is the link.
Can you help me to learn more?
(Other definitions for bistro that I've seen before include "somewhere to eat" , "Intimate eatery" , "Cafe/restaurant" , "Cheap restaurant" , "Modest restaurant" .)