Jog out of bistro, tentatively (4)
I believe the answer is:
trot
'jog' is the definition.
(I've seen this before)
'out of bistro tentatively' is the wordplay.
'out of' says the answer is hidden in the clue.
'TROT' is hidden in the letters of 'bistro tentatively'.
(Other definitions for trot that I've seen before include "Jog along" , "Move quite fast" , "moderate movement" , "Run with short steps" , "Left wing" .)