Listen to this crust

מצרכים

• 700g (5 cups) fresh cultivated blueberries
• 100g (1/2 cup) granulated sugar
• 15g (2 tbsp) cornstarch
• 1 medium lemon (zest and 15ml / 1 tbsp juice)
• Pinch of kosher salt
• 190g (1 1/2 cups) all-purpose flour
• 50g (1/4 cup) granulated sugar
• 10g (2 tsp) baking powder
• 3g (3/4 tsp) kosher salt
• 85g (6 tbsp) unsalted butter, frozen solid
• 120g (1/2 cup) heavy cream or cold buttermilk