Dish of global timelessness (5)
I believe the answer is:
balti
'dish' is the definition.
(type of curry)
'of global timelessness' is the wordplay.
'of' says the answer is hidden in the clue.
'BALTI' can be found hidden inside 'global timelessness'.
(Other definitions for balti that I've seen before include "One-pot curry" , "Type of Pakistani cuisine" , "Curry cooked in and eaten out of the same pot" , "Indian cuisine cooked in two-handled dish" , "Pakistani curry dish, originating perhaps in 1970s' Birmingham" .)