Chart format (3)
I believe the answer is:
pie
'chart format' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for pie that I've seen before include "Dish baked in pastry-lined pan" , "bakery item" , "Pastry-crust savoury" , "Pastry-covered dish" , "Bird - dish - mixed type" .)