'Punctiliousness in the Pantry', including first and second edition (8)
I believe the answer is:
'punctiliousness' is the definition.
(I've seen this before)
'pantry including first and second edition' is the wordplay.
'including' means one lot of letters goes inside another.
'first and' becomes 'e' (I can't justify this - if you can you should give a lot more credence to this answer).
'second edition' becomes 'd' (2nd letter of 'edition').
'pantry' going around 'ed' is 'PEDANTRY'.
'in the' is the link.
Can you help me to learn more?
(Other definitions for pedantry that I've seen before include "nit picking" , "undue formality" , "Excessive concern with minor rules" , "Nitpicking" , "Stuffiness" .)