Pumpkin pie is a traditional sweet dessert, often eaten during the fall and early winter, especially for Thanksgiving and Christmas in the United States and Canada. The pumpkin is a symbol of harvest time and featured also at Halloween.The pie consists of a pumpkin-based custard, ranging in color from orange to brown, baked in a single pie shell, rarely with a top crust. The pie is generally flavored with cinnamon, powdered ginger, nutmeg, and cloves.