Man-made object in back street cafe, traditional (8)
I believe the answer is:
artefact
'man-made object' is the definition.
(I've seen this before)
'in back street cafe traditional' is the wordplay.
'back' says the letters should be written backwards.
'in' indicates a hidden word.
'tcafetra' can be found hidden inside 'street cafe traditional'.
'tcafetra' backwards is 'ARTEFACT'.
(Other definitions for artefact that I've seen before include "Man-made object (maybe found in dig)" , "Thing made by human workmanship" , "hand-made thing" , "Handcrafted object" , "Manufactured product" .)