Claret with AA drunk according to menu (1,2,5)
I believe the answer is:
a la carte
'menu' is the definition.
(a la carte is a kind of menu)
'claret with aa drunk' is the wordplay.
'with' says to put letters next to each other.
'drunk' is an anagram indicator.
'claret'+'aa'='claretaa'
'claretaa' is an anagram of 'A LA CARTE'.
'according to' is the link.
(Other definitions for a la carte that I've seen before include "Chosen from full menu" , "The pick what you please menu" , "It suggests lots of possibilities" , "offering unrestricted choice" , "Not part of a restaurant's set meal" .)