Relish a difficult situation (6)
I believe the answer is:
pickle
I believe this clue is a double definition.
'relish' is the first definition.
(pickle is a kind of relish)
'a difficult situation' is the second definition.
(I've seen this before)
(Other definitions for pickle that I've seen before include "Sticky situation" , "Solution for preserving food" , "Steep - predicament" , "A preserved vegetable or a fine mess" , "Relish, difficult situation" .)