4 organic large egg whites Pinch fine salt 1/2 teaspoon white vinegar 3/4 cup plus 2 tablespoons granulated sugar 1 tablespoon cornstarch 1/2 teaspoon vanilla extract 1 cup heavy cream 1 1/2 cups fresh blueberries, or any fresh fruit, plus more for serving
Preheat the oven to 350°F. Combine egg whites, salt, and white vinegar together in the bowl of an electric mixer and beat on high speed until soft peaks form. Combine the 3/4 cup sugar and cornstarch together in a small bowl and add to the egg whites in thirds, whisking each addition in completely. Add the vanilla and beat until stiff peaks form. Line a baking sheet with parchment paper and spoon the meringue in 8 big spoonfuls, using a spoon to spread them in a circle, and then make an indent in each. Bake for 10 minutes, lower the heat to 200°F, and bake for another hour. Turn off the heat and cool the meringues in the oven for an hour, propping the door open with a wooden spoon.
Meanwhile, whip the cream together with the remaining 2 tablespoons of sugar. In a small bowl, crush 1/2 cup of the blueberries with a potato masher or a spoon to release their juice. Fold those and the rest of the blueberries into the cream if you like, or use as a topping over the egg whites and cream. Evenly distribute the cream on the meringues, filling in the indentations. Top with juicy blueberries and serve.