Jog out of bistro, tenuously (4)
I believe the answer is:
trot
'jog' is the definition.
(I've seen this before)
'out of bistro tenuously' is the wordplay.
'out of' says the answer is hidden in the clue.
'TROT' is hidden within 'bistro tenuously'.
(Other definitions for trot that I've seen before include "Gait between a walk and a canter" , "Horse's pace - Communist" , "A slowish run, perhaps by horse" , "Clip (horse)" , "Move like a horse" .)