Traditional fare in accommodation for most those in 24 down (7,3)
I believe the answer is:
Here is my best explanation:
'most those in 24 down' is the definition.
I can't judge whether this definition defines the answer.
'traditional fare in accommodation' is the subsidiary indication.
'traditional fare' becomes 'epi' (I can't justify this - if you can you should believe this answer much more).
'in' means one lot of letters goes inside another.
'accommodation' becomes 'cottage' (I have seen 'simple accommodation' mean 'cottage' so perhaps 'accommodation' could also mean 'cottage').
'epi' inserted inside 'cottage' is 'cottagepie'.
'for' is the link.
(Other definitions for cottage pie that I've seen before include "Minced beef topped with mashed potato", "homely dish", "Mince and mashed potato dish", "Meat and potato dish", "Mince/mashed potato dish", "traditional dish", "Dish of minced meat topped with mashed potato", "Mash-topped dish", "Minced meat topped with potato" and "Potato-topped dish".)