Eat this and do battle! (8)
I believe the answer is:
consomme
'eat this' is the definition.
The definition suggests a singular noun which matches the answer.
'do battle' is the wordplay.
'do' becomes 'con' (both can mean to defraud).
'battle' becomes 'Somme' (Somme is an example).
'con'+'somme'='CONSOMME'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for consomme that I've seen before include "Clear meaty soup" , "Scone, mom eaten with soup" , "stock product" , "Thin, clear soup" , "Clear soup made with concentrated stock" .)