Pleasant surprise in Eritrea tempts (5)
I believe the answer is:
treat
'pleasant surprise' is the definition.
(a treat is a pleasant gift or favour)
'in eritrea tempts' is the wordplay.
'in' indicates a hidden word.
'TREAT' can be found hidden inside 'eritrea tempts'.
(Other definitions for treat that I've seen before include "Event causing special pleasure" , "Unexpected surprise" , "Try to heal" , "Attend to; surprise gift" , "Shout" .)