Something that produces red pickle (13)

I believe the answer is:

embarrassment

I'm a little stuck... Click here to teach me more about this clue!

'pickle' is the definition.
(thesaurus)

I don't understand the rest of the clue.

(Other definitions for embarrassment that I've seen before include "Awkwardness, shame" , "Feeling of self-consciousness" , "Self-conscious shame" , "Self-consciousness, shame" , "Mortification" .)

I've seen this clue in The Guardian.

Want a hint initially instead of a full solution? Install my app