### Clue: Source of prosciutto supplied by mail, say? (5)
### Answer: PARMA 
 ### Explanation: Definition: Source of prosciutto
 **The 1st letter of**(Source of) "prosciutto " **plus**(supplied by) **homophone of**(…, say) "armour"(mail;body protection worn by the knights of old).
Defn: The Italian city where the famous ham;prosciutto comes from. A WIWD (wordplay intertwined with definition) clue.