Cook returns from week abroad (4)
I believe the answer is:
bake
'cook' is the definition.
(baking is a kind of cooking)
'returns from week abroad' is the wordplay.
'returns' is a reversal indicator.
'from' indicates a hidden word.
'ekab' is hidden in the letters of 'week abroad'.
'ekab' backwards is 'BAKE'.
(Other definitions for bake that I've seen before include "Biscuit" , "work in kitchen?" , "Cook (eg, cakes)" , "Cook (eg, bread)" , "Cook (cakes, etc)" .)