350g/12oz frozen mixed berries
2 oranges, finely grated zest only (reserve the juice for the compôte)
2 oranges, juice only
150g/5½oz rolled oats
½ tsp ground cinnamon or mixed spice
60g/2¼oz honey
150g/5½oz raisins
75g/2½oz mixed seeds
3 free-range egg whites
150g/5½oz Greek yoghurt (per serving)