Such a fine meal, with seconds, to consume with relish (4-2)
I believe the answer is:
slap up
'such a fine meal' is the definition.
(I've seen this before)
'seconds to consume with relish' is the wordplay.
I cannot really see how this works, but
'seconds' could be 's' and 's' is found in the answer.
'relish' could be 'lapup' (I've seen this before) and 'lapup' is found in the answer.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).
'with' acts as a link.
Can you help me to learn more?
(Other definitions for slap up that I've seen before include "Such a big meal" , "Like a good meal" , "lavish meal?" , "fine meal" , "Excellent" .)