01 - Puree raspberries with sugar and lemon juice in blender until smooth. Strain through fine mesh sieve to remove seeds. Set aside.
02 - Soak gelatin sheets in cold water for 5 minutes, or sprinkle powdered gelatin over 2 tbsp cold water to bloom.
03 - Gently heat 2 tbsp raspberry puree in small saucepan until just warm. Squeeze excess water from gelatin sheets and stir into warm puree, or stir bloomed powdered gelatin until dissolved. Mix back into remaining puree and cool to room temperature.
04 - In clean bowl, whip heavy cream with vanilla extract until medium peaks form. Refrigerate until ready to use.
05 - In separate bowl, whisk egg whites to soft peaks. Gradually add powdered sugar and continue whipping until stiff, glossy peaks form.
06 - Gently fold cooled raspberry puree into whipped cream until almost combined. Carefully fold in meringue in two additions until smooth and fully incorporated, maintaining airy texture.
07 - Spoon or pipe mixture into serving glasses. Refrigerate for at least 2 hours until completely set.
08 - Top with fresh raspberries before serving. Optionally dust with powdered sugar or add fresh mint leaves for presentation.