5 large eggs
1 cup Sugar
8 tablespoons (1 stick) unsalted butter
1 cup fresh lemon juice (strained (6 to 7 lemons))
1 1/2 cups heavy (whipping) cream (chilled)
  Grated rind of 1 lemon
1/4 cup dark rum (optional)
1 pint fresh raspberries
1 pint fresh blueberries
8 fresh mint leaves (as garnish)