Eton MessIngredients:4 large egg whites1 cup granulated sugar1 teaspoon vanilla extract1 cup heavy cream1 tablespoon powdered sugar2 cups fresh berries (such as strawberries, raspberries, or blueberries), chopped if largeInstructions:Preheat your oven to 250°F (120°C). Line a baking sheet with parchment paper.In a large, clean bowl, beat the egg whites with an electric mixer until stiff peaks form.Gradually add the granulated sugar, a spoonful at a time, while continuing to beat th