Pumpkin pie - Guardini

Ingredients

• 100 g | 2/3 cup all-purpose flour, plus extra for dusting
• 100 g | 2/3 cup whole-wheat flour
• 2 tbsp icing sugar
• 120 g | 1/2 cup unsalted butter, cold and cubed
• 2 - 4 tbsp iced water
• 1 small egg, beaten
• 400 g | 1 3/4 cups canned pumpkin purée
• 400 ml sweetened condensed milk
• 2 medium eggs
• 1 1/2 tsp ground ginger
• 1/2 tsp ground cinnamon
• 1/4 tsp ground nutmeg
• 1 pinch salt
• 250 ml heavy cream