In a stew, in a stew, in a stew? Good! (8)
I believe the answer is:
sweating
'in a stew' is the definition.
'a stew in a stew? good' is the wordplay.
'a stew?' indicates anagramming the letters (I've seen 'stew' mean this).
'good' becomes 'g' (abbreviation).
'a'+'stew'+'in'='astewin'
'astewin' with letters rearranged gives 'sweatin'.
'sweatin'+'g'='SWEATING'
'in' is the link.
(Other definitions for sweating that I've seen before include "Perspiring" , "Like a pig maybe" , "Anxious" .)