Using the whisk on a hand mixer, whisk the egg, egg yolk, icing sugar and water for approx. 5 mins. until the mixture is light and fluffy. Mix the sour milk with the cornflour, stir into the egg mixture. Beat the egg whites with the salt until stiff, fold the egg whites carefully into the mixture using a rubber spatula. Transfer to the dishes and top with the strawberries.
Bake for approx. 20 mins. in the centre of an oven preheated to 180°C. Remove from the oven and allow to cool a little.
Serve with vanilla ice cream.