Turning back, meet one salesman with a drink (8)
I believe the answer is:
aperitif
'drink' is the definition.
(aperitif is a kind of drink)
'turning back meet one salesman with a' is the wordplay.
'turning' is a reversal indicator.
'back meet' becomes 'fit' (fitting is a kind of meeting. I am not sure about the 'back' bit.**).
'one' becomes 'i' (Roman numeral).
'salesman' becomes 'rep' (I've seen this before).
'with' is a charade indicator (letters next to each other).
'fit'+'i'+'rep'='fitirep'
'fitirep' backwards is 'peritif'.
'peritif' put after 'a' is 'APERITIF'.
Can you help me to learn more?
(Other definitions for aperitif that I've seen before include "Pre-dinner drink" , "wine, possibly, before meal" , "appetizer" , "Alcoholic drink before a meal, like sherry" , "Alcoholic drink to whet the appetite" .)