Opinion about chocolate bar is neither here nor there (7)
I believe the answer is:
betwixt
'neither here nor there' is the definition.
(I've seen this in another clue)
'opinion about chocolate bar' is the wordplay.
'opinion' becomes 'bet' (bet can mean a prediction or opinion on the future).
'about' indicates putting letters inside.
'chocolate bar' becomes 'twix' (chocolate bar. I am not sure about the 'chocolate' bit.).
'bet' enclosing 'twix' is 'BETWIXT'.
'is' is the link.
Can you help me to learn more?
(Other definitions for betwixt that I've seen before include "Old word for between" , "Between (arch.)" , "In the middle of" .)