Before starting this Meringue Spheres with Chocolate Mousse, Ginger and Cherry Compote recipe, organise the necessary ingredients for the meringue. Pour the egg whites and castor sugar in the stand mixer recipient. Combine with a whisk. Place the recipient over a bain-marie prepared in a saucepan... ... and whip until hot. When touching the preparation with the tip of your finger, you should feel a stinging sensation due to the heat. Excessive heating could cause the eggs to coagulate. ...