Pre-heat the oven to 180°C (350°F) and line a large baking tray with baking/grease-proof paper.
Separate the egg whites and yolks. Whisk the whites with a pinch of salt until they start to form peaks. Slowly add the sugar and continue to whisk until the mixture is smooth and glossy.
Drop six equal sized dollops of meringue onto the baking tray, smoothing with a knife until each is a rough round shape of level thickness (don't spend too much time on this - they are going to be crushed!).
Turn the heat down to 150°C (300°F) and bake the meringues for 30 minutes. Turn the heat off completely but leave the meringues inside the oven for a further 30 minutes. Remove and allow to cool completely.
While the meringues are baking, place the berries, brown sugar and vanilla sugar in a pan and heat for about ten minutes - the mixture should become thick and have an almost a jam-like consistency. Take off the heat and allow to cool completely.
Mix the yogurts and honey together in a large bowl and leave in the fridge until it is needed.
Right before serving, break up three meringues into small pieces and gently stir into the yoghurt (don't do it a long time before because the meringues will go soggy!). Pour around two tablespoons of yoghurt mixture in each individual serving bowl and top with one tablespoon of the berry mixture. Cover with a little more of the yoghurt mixture followed by more berry sauce on top.
Crumble the fourth meringue on top of the dessert and serve immediately. Enjoy!