01 - In a small bowl, sprinkle the powdered gelatin evenly over the 2 tablespoons of cold water. Allow it to bloom for 5 minutes, becoming soft and spongy.
02 - In a saucepan, combine the passion fruit pulp and granulated sugar over low heat. Stir continuously until the sugar is completely dissolved and the mixture is warm to the touch, ensuring it does not boil.
03 - Remove the saucepan from the heat. Stir the bloomed gelatin into the warm passion fruit mixture until it is entirely dissolved and no granules remain. Set aside to cool to room temperature.
04 - In a clean, dry bowl, using an electric mixer, beat the large egg whites until they form firm, glossy stiff peaks.
05 - In a separate chilled bowl, whip 1 cup of cold heavy cream until soft peaks form.
06 - Gently fold the cooled passion fruit mixture into the whipped cream until just combined. Then, carefully fold in the beaten egg whites until the mixture is homogenous and smooth, being careful not to deflate the air.
07 - Divide the mousse evenly among individual serving glasses or bowls. Refrigerate for a minimum of 2 hours, or until thoroughly set.
08 - Just before serving, whip the remaining 1 cup of cold heavy cream with the 2 tablespoons of powdered sugar until soft peaks are achieved. Spoon or pipe the whipped cream onto the chilled mousse.
09 - Garnish the mousse with fresh passion fruit pulp, seeds, or fresh mint leaves, if desired. Serve immediately for optimal texture and flavor.