Winter food that's supposed to be burnt? (4,3)
I believe the answer is:
yule log
I believe this clue is a double definition.
'winter food' is the first definition.
(cake traditionally eaten at Christmas)
'that's supposed to be burnt?' is the second definition.
(log for a fire at Christmas time)
(Other definitions for yule log that I've seen before include "Chunk of wood for the Christmas fire" , "fuel for seasonal fire" , "Christmas cheer" , "Christmas firewood" , "Christmas decoration" .)