Yankee boards transport that's cut fare from Asia (5)
I believe the answer is:
sushi
'yankee boards' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'transport that's cut fare from asia' is the wordplay.
'transport' becomes 'sub' (sub is a kind of transport).
'that's cut' means to remove the last letter.
'fare from asia' becomes 'shi' (I can't explain this - if you can you should believe this answer much more).
'sub' with its last letter taken off is 'su'.
'su'+'shi'='SUSHI'
Can you help me to learn more?
(Other definitions for sushi that I've seen before include "put away in Japan" , "Raw fish dishes" , "exotic dish" , "Rice and raw fish wrapped in seaweed" , "Japanese food" .)