Spud sampler doesn't want seconds (5)
I believe the answer is:
tater
'spud' is the definition.
(I know that spud can be written as tater)
'sampler doesn't want seconds' is the wordplay.
'sampler' becomes 'taster' (I've seen this before).
'doesn't want' is a deletion indicator.
'seconds' becomes 's' (abbreviation).
'taster' with 's' removed is 'TATER'.
(Other definitions for tater that I've seen before include "Charlotte, for example" , "King Edward, for example" , "Spud" , "Murphy" , "found in vegetable basket" .)