Oaty cereal
I believe the answer is:
muesli
'oaty cereal' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for muesli that I've seen before include "Breakfast mixture of dry cereals and fruits" , "Breakfast dish of cereal, dried fruit and nuts in milk" , "Dish of dried fruit and cereals" , "Mixture of crushed cereals. nuts and fruit" , "Rolled oats, nuts and fruit mixture" .)