Peel gramma, discard seeds then chop into pieces and cook with a little water in a covered saucepan for a good 3/4 hour. Drain in a colander until cold, pressing lightly to extract as much of the liquid as possible. Transfer gramma into a bowl, add sugar, orange rind, then the juice and rind of the lemon. Add sultanas, golden syrup and mixed spice. Taste, add more lemon juice if preferred. Refrigerate until ready to make the pie.

Preheat oven to moderately hot (190 deg to 200 deg C). To make the pastry, sift both the flours with salt into a bowl, then rub in butter. Beat the egg with sugar and add to the flour. Mix quickly by hand into a dough. Knead lightly with a little extra flour. Roll out 3/4 of the pastry to fit a 20 cm metal pie plate (don't make the mistake of rolling out the pastry too thinly). Fill the pastry-lined pie plate with the gramma mixture. Wet the edges then roll out remaining pastry and place on top of the pie. Trim away any excess with a knife then press edges to seal with a fork. Brush with milk and sprinkle with a little extra sugar (this makes it extra crunchy). Bake in a moderately hot oven for about one hour.

Serve warm with thick cream or with homemade vanilla custard or with vanilla ice cream. Serves 6 to 8

Per serving: 1399 Calories (kcal); 126g Total Fat; (79% calories from fat); 7g Protein; 67g Carbohydrate; 515mg Cholesterol; 1295mg Sodium Food Exchanges: 0 Grain(Starch); 1 Lean Meat; 0 Vegetable; 0 Fruit; 24 1/2 Fat; 4 1/2 Other Carbohydrates