Potato snacks (6)
I believe the answer is:
crisps
'potato snacks' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for crisps that I've seen before include "Potato snack" , "Very thin slices of potato fried in fat" , "Thin slice of potato fried in deep fat" , "junk food" , "Common snack" .)