Fresh Blackberry Tart

Bahan-bahan (8 porsi)

• 1 cup all purpose flour
• ¼ cup (½ stick) cold butter, (cut into pieces)
• ¼ cup granulated white sugar
• ¼ teaspoon baking powder
• ½ teaspoon grated lemon zest
• 1 pinch salt
• 1 large egg
• 2 cups fresh blackberries
• ¾ cup granulated white sugar, (or to taste)
• 3 tablespoons cornstarch
• ¼ teaspoons salt
• 2 cups fresh blackberries
• 2 tablespoons granulated white sugar