You heard holy man from the east displays taste (5)
I believe the answer is:
umami
'taste' is the definition.
(I've seen this before)
'you heard holy man from the east' is the wordplay.
'you heard' becomes 'U' (homophone of 'you').
'holy man' becomes 'imam' (Muslim preacher).
'from the east' says the letters should be written in reverse (on a map from right to left).
'imam' in reverse letter order is 'mami'.
'u'+'mami'='UMAMI'
'displays' is the link.
(Other definitions for umami that I've seen before include "Savoury taste sensation produced by glutamates - I, a mum (anag)" , "Savoury flavour" , "meaty taste" , "Fifth flavour" , "Japanese word for pleasant savoury taste" .)