Velvety Vanilla Custard Pie

Ingredients

• 1 1/2 cups all-purpose flour
• 1 tablespoon vanilla extract
• 1 teaspoon white vinegar
• 4 tablespoons ice water
• 2/3 cup sugar
• 4 large eggs
• 1/4 teaspoon baking powder
• 1 cup heavy cream
• 1 1/2 cups milk
• 1/4 teaspoon ground nutmeg
• 1/4 cup vegetable shortening
• 1/4 teaspoon salt
• 4 tablespoons unsalted butter