One of the less wise things to eat? (6)
I believe the answer is:
rasher
'one' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for rasher that I've seen before include "item at breakfast" , "More imprudent" , "more headstrong" , "pig, to an extent" , "Thin strip of bacon" .)