1 Peel, halve and core the quinces and cut into thick slices.
2 Heat the port in a pan with the cinnamon stick and bring to a boil. Add the quince slices and remove from the heat. Cover and leave to stand for 15 minutes.
3 Heat the oven to 200°C (180° fan) 400°F gas 6. Butter a pie dish or baking dish.
4 Remove the cinnamon stick from the quinces. Put the quince slices and the liquid in the baking dish.
5 Sift the flour, salt and baking powder into a mixing bowl and rub in the butter until the mixture resembles breadcrumbs. Stir in the buttermilk and sugar and mix to form a soft dough.
6 Put tablespoons of the dough on top of the quince slices and bake for about 25-30 minutes until golden brown.