Each expert will consume dessert? (6)
I believe the answer is:
apiece
'each' is the definition.
('apiece' can be a synonym of 'each')
'expert will consume dessert?' is the wordplay.
'expert' becomes 'ace' (ace is a kind of expert).
'will consume' means one lot of letters goes inside another.
'dessert?' becomes 'pie' (pie is an example of a dessert).
'ace' enclosing 'pie' is 'APIECE'.
(Other definitions for apiece that I've seen before include "for everyone" , "For or by each one of group" , "Per person" , "A head" .)