Chap needing hot water in W African state (8)
I believe the answer is:
benjamin
'chap' is the definition.
'hot water in w african state' is the wordplay.
'hot water' becomes 'jam' (I can't justify this - if you can you should believe this answer much more).
'in' means one lot of letters goes inside another.
'w african state' becomes 'Benin' (West African country).
'jam' put within 'benin' is 'BENJAMIN'.
'needing' acts as a link.
Can you help me to learn more?
(Other definitions for benjamin that I've seen before include "Jacob's youngest son" , "Netanyahu or Franklin" , "Son of Jacob" , "British composer of 'Peter Grimes'" , "Tribal head" .)