Selection of waffles, and food including mushrooms and porkpies? (4,4)
I believe the answer is:
chat show
'selection of waffles' is the definition.
'food including mushrooms and porkpies?' is the wordplay.
'food' becomes 'chow' (chow is a kind of food**).
'including' indicates putting letters inside.
'mushrooms and porkpies?' becomes 'hats'.
'chow' placed around 'hats' is 'CHAT SHOW'.
'and' is the link.
(Other definitions for chat show that I've seen before include "Airing of gas" , "TV discussion programme" , "Programme on which celebs talk" , "Late Late or Graham Norton, say" , "TV programme in which celebrities are interviewed informally" .)