### Clue: Origin of teriyaki Jabberwock's head with a Chinese way to cook its rump, say? (5)
### Answer: JAPAN 
 ### Explanation: Definition: Origin of teriyaki
 **The 1st letter of**(…'s head) "Jabberwock" **plus**(with) PAN(to pan-fry;to cook in a frying pan, say, a piece of meat, say, Jabberwock's rump, as done, say, by the Chinese).