Blueberry-White Chocolate Mousse Tart

INGREDIENTS

• 1 cup chilled whipping cream
• White chocolate, shavings
• 1/2 teaspoon salt
• 2 large egg yolks
• 10 tablespoons (1 1/4 sticks) chilled unsalted butter, cut into pieces
• 1 teaspoon unflavored gelatin
• 6 tablespoons fresh lemon juice
• 3 tablespoons sugar
• 4 ounce good-quality white chocolate (such as Lindt or Baker's), finely chopped
• 3 cups fresh blueberries
• 1 1/4 cups all purpose flour
• 1 tablespoon cold water
• 1/3 cup powdered sugar
• 1 tablespoon water