Low FODMAP Blueberry Pie - FODMAP Everyday

Ingredients

• 2 large eggs, (cold)
• 1/3 cup (75 ml) ice cold water
• 1/2 teaspoon apple cider or distilled white vinegar
• 2 1/2 cups (363 g) low FODMAP gluten-free all-purpose flour,
• 1 tablespoon sugar
• 1/2 teapoon xanthan gum
• 1/2 teaspoon salt
• 1 cup (2 sticks; 226 g) very cold unsalted butter, (cut into tablespoon sized pieces)
• 3 dry pints (1653 ml) fresh blueberries, (washed, picked over and patted dry)
• 1/4 cup (28 g) cornstarch
• 1 cup (198 g) sugar plus extra
• 1 teaspoon fresh squeezed lemon juice
• 1 tablespoon unsalted butter, (cut into large pieces)
• 1 tablespoon lactose free whole milk, (2%, 1% or fat free, optional)