Slices of quiche perhaps given to chefs on occasion (6)
I believe the answer is:
pieces
'slices of quiche' is the definition.
'pieces' can be an answer for 'slices' ('piece' can be a synonym of 'slice'). I am unsure of the 'of quiche' bit.
'perhaps given to chefs on occasion' is the wordplay.
'perhaps' becomes 'p' (this might be a standard abbreviation I've not previously seen).
'on occasion' means one should take alternating letters.
'given'+'chefs'='givenchefs'
The alternating letters of 'givenchefs' are 'ieces'.
'p'+'ieces'='PIECES'
Can you help me to learn more?
(Other definitions for pieces that I've seen before include "Portions, parts" , "Fragments" , "Bits < of sandwiches" , "barrels of wine" , "Chessmen" .)