The main ingredient in traditional apple pie is, unsurprisingly, apples. The dish typically uses tart, firm varieties of apples, such as Granny Smith or Braeburn, to maintain their structure and flavor during baking. The apples are often mixed with sugar, cinnamon, and sometimes nutmeg or lemon juice to enhance their sweetness and acidity. The pie is encased in a buttery, flaky crust, which complements the spiced, sweet filling. This dessert has become a symbol of American culture and is frequently enjoyed during holidays and gatherings.