Crossword Genius

City hair-style of consuming interest (4,3)

Ross

I believe the answer is:

bath bun

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'consuming interest' is the definition.
The definition suggests a singular noun which matches the answer.

'city hair-style' is the wordplay.
'city' becomes 'bath' (I've seen this before).
'hair-style' becomes 'bun' (hair arranged in ball at back of head).
'bath'+'bun'='BATH BUN'

'of' acts as a link.

Can you help me to learn more?

(Other definitions for bath bun that I've seen before include "Rich, sweet little cake" , "Small cake with spices and fruit" , "Sweet spicy confection" .)

I've seen this clue in the Evening Standard.
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