Rice dish originally taken by drunkard in Brazilian port (7)
I believe the answer is:
risotto
'rice dish' is the definition.
(I've seen this before)
'originally taken by drunkard in brazilian port' is the wordplay.
'originally' says to take the initial letters.
'by' means one lot of letters go next to another.
'drunkard' becomes 'sot' (synonyms).
'in' is an insertion indicator.
'brazilian port' becomes 'rio' (I've seen this before).
The first letter of 'taken' is 't'.
't' put after 'sot' is 'sott'.
'sott' put inside 'rio' is 'RISOTTO'.
(Other definitions for risotto that I've seen before include "dishy thing!" , "Perhaps Italian" , "Italian course" , "Italian dish of rice, meat and vegetables" , "scoff" .)