Blueberry Scones with Tart Lemon Glaze

Bahan-bahan (8 porsi)

• 2 cups all-purpose flour, (spooned into measuring cup and leveled-off, plus more for dusting)
• ¾ teaspoon salt
• 1 tablespoon baking powder
• ½ cup granulated sugar
• 6 tablespoons cold unsalted butter, (cut into ½-inch (13-mm) pieces)
• 1 heaping cup blueberries
• 2/3 cup heavy cream, (plus 1 to 2 tablespoons more, if necessary)
• 1 large egg
• 1 teaspoon vanilla extract
• 1 large egg
• 1 teaspoon butter, (melted)
• 1 cup confectioners' sugar
• 1 teaspoon lemon zest, (from 1 lemon)
• 2 tablespoons freshly squeezed lemon juice, (from 1 lemon)