Starters for Tokyo lunch including uncooked fish (5)
I believe the answer is:
trawl
'fish' is the definition.
(trawl can mean to fish)
'starters for tokyo lunch including uncooked' is the wordplay.
'starters for' says to take the initial letters.
'including' is an insertion indicator.
'uncooked' becomes 'raw' (similar in meaning).
The initial letters of 'tokyo lunch' is 'tl'.
'tl' placed around 'raw' is 'TRAWL'.
(Other definitions for trawl that I've seen before include "Fish using nets" , "search for a suitable appointment" , "Fishing dragnet" , "search for information" , "Large wide-mouthed fishing net, usually dragged" .)