Blackberry Pie

Bahan-bahan (8 porsi)

• 1 double crust Darn Good Whole Wheat Pie Crust (or your favorite pie crust)
• 6 cups fresh or frozen blackberries (about 1 1/2 pounds; if frozen, do not thaw)
• ¾ cup granulated sugar
• 1 tablespoon cassis liqueur or Chambord raspberry liqueur (optional)
• 2 teaspoons lemon juice, orange juice, or lime juice
• ⅓ cup all-purpose flour
• 2 teaspoons quick-cooking tapioca or cornstarch* (plus an additional teaspoon if your berries are super juicy)
• ⅛ teaspoon kosher salt
• ⅛ teaspoon ground cinnamon (freshly grated nutmeg, or cardamom for something different)
• 1 tablespoon unsalted butter (cut into small pieces)
• 1 large egg (beaten with 1 teaspoon water for an egg wash)
• 1 tablespoon turbinado sugar or similar coarse sugar
• Vanilla ice cream (optional for serving)