City sailors finding enhancement in soak (4,5)
I believe the answer is:
bath salts
'enhancement in soak' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'city sailors' is the wordplay.
'city' becomes 'bath' (English city).
'sailors' becomes 'salts' (salt is a kind of sailor).
'bath'+'salts'='BATH-SALTS'
'finding' is the link.
Can you help me to learn more?
(Other definitions for bath salts that I've seen before include "Perfumes" , "tip these into the water" .)