His minced steak is sheer poetry! (5)
I believe the answer is:
keats
'sheer poetry' is the definition.
The definition suggests a singular noun which matches the answer.
'his minced steak' is the wordplay.
'steak' anagrams to 'KEATS'.
However, I'm unsure how this is indicated.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for keats that I've seen before include "John --, English poet" , "Author of the poem Ode to a Nightingale, d. 1821" , "English poet, 1795-1821" , "Endymion, Lamia poet" , "English poet, d. 1821 in Rome of TB" .)