Make fun, or let us put out this on the menu (4,6,4)
I believe the answer is:
mock turtle soup
'the menu' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'make fun or let us put out this on' is the wordplay.
'make fun' becomes 'mock' (I can't justify this - if you can you should believe this answer much more).
'out' indicates an anagram (out can mean wrong or inaccurate).
'this on' says to put letters next to each other.
'or'+'let'+'us'+'put'='orletusput'
'orletusput' anagrammed gives 'turtlesoup'.
'mock'+'turtlesoup'='MOCK TURTLE SOUP'
Can you help me to learn more?
(Other definitions for mock turtle soup that I've seen before include "for which bovine head is used as substitute" , "starter" , "First course" .)