Brush aside leaving bread that's served in Japanese restaurant (5)
I believe the answer is:
sushi
'japanese restaurant' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'brush aside leaving bread that's served' is the wordplay.
'leaving' is a deletion indicator.
'that's served' indicates an anagram.
'brush'+'aside'='brushaside'
'brushaside' with 'bread' removed is 'ushsi'.
'ushsi' is an anagram of 'SUSHI'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for sushi that I've seen before include "Japanese food" , "cold food" , "Exotic food" , "Rice, seafood cuisine" , "Asian food" .)