Prepare the Sweet Mincemeat Filling: In a large mixing bowl, combine raisins, sultanas, currants, candied peel, chopped cooking apple, and chopped almonds.Add brown sugar, ground cinnamon, mixed spice, grated lemon zest, and lemon juice to the bowl.
In a saucepan over medium heat, melt the butter. Once melted, pour it over the fruit and sugar mixture in the bowl.Stir the ingredients thoroughly until well combined.Pour brandy, rum, or sherry over the mixture, ensuring all the ingredients are well coated.Stir the mixture once more to evenly distribute the spirits.Cover the bowl with a clean cloth or plastic wrap and let the mixture marinate for at least 12 hours or overnight. This allows the flavors to meld and develop.
Prepare the Pastry: In a large bowl, mix the all-purpose flour and cornstarch. In a separate small bowl, combine water and apple cider vinegar. Cut the shortening and butter (or margarine) into small pieces and add to the flour mixture. Use your hands to rub the butter into the flour until it resembles wet sand. Add the egg, apple cider vinegar, icing sugar, and salt. Continue kneading until the dough is smooth. Divide the dough into two portions, wrap each in plastic wrap, and refrigerate for 10 minutes.
Roll Out the Pastry: Remove the chilled dough from the refrigerator and place it on a lightly floured surface. Roll out the dough into a thin sheet. Place the rolled pastry into a pie dish, ensuring it adheres to the dish's shape.
Add the Sweet Mincemeat Filling:Spoon the prepared sweet mincemeat filling into the pastry shell, spreading it evenly.
Form the Pie Crust: Trim any excess pastry using a knife to ensure a neat pie crust. Brush the top with egg white and sprinkle with sugar. Use a fork to prick a few small holes in the pastry bottom to prevent it from puffing up during baking.
Bake: Preheat the HYSapientia Air Fryer Oven to 150 degrees Celsius. Bake the pastry with the sweet mincemeat filling for 18-20 minutes or until the bottom is golden brown. Baking times may vary, so monitor the process.