Cheat going round pub in the morning with spice (8)
I believe the answer is:
cinnamon
'spice' is the definition.
(I know that cinnamon is a type of spice)
'cheat going round pub in the morning' is the wordplay.
'cheat' becomes 'con' (conning is a kind of cheating).
'going round' indicates putting letters inside (some letters go around others).
'pub' becomes 'inn' (an inn is a type of pub).
'in the morning' becomes 'am' (short for ante meridiem - before noon).
'inn'+'am'='innam'
'con' enclosing 'innam' is 'CINNAMON'.
'with' is the link.
(Other definitions for cinnamon that I've seen before include "spicy stuff" , "Spicy bark" , "Spice from dried bark" , "Yellowish-brown - spice" , "The spice is oddly non-manic" .)