Specimen; taster (6)
I believe the answer is:
sample
I believe this clue is a double definition.
'specimen' is the first definition.
(I've seen this in another clue)
'taster' is the second definition.
(I've seen this before)
(Other definitions for sample that I've seen before include "Taste(r)" , "Small part intended to represent the whole" , "Experience" , "Small part representative of the whole" , "Representative portion" .)