Wife finally opening a can, enjoyed home cooking? (3,2)
I believe the answer is:
ate in
'enjoyed home cooking?' is the definition.
(I've seen this in another clue)
'wife finally opening a can' is the wordplay.
'finally' says to take the final letters.
'opening' indicates putting letters inside (some letters open a gap in others).
'can' becomes 'tin' (both are metal containers).
The final letter of 'wife' is 'e'.
'a'+'tin'='atin'
'e' put into 'atin' is 'ATE IN'.
(Other definitions for ate in that I've seen before include "Had something at home" , "Dined at home" , "Went to restaurant? Not" .)