1 To make the relish, put all ingredients except sugar into a heavy-based saucepan. Bring to a boil and boil steadily for 30 minutes, stirring often.
2 Add the sugar and continue to boil, stirring , for another hour. Puree in a food processor if a finer texture is required.
3 Preheat oven to 190C. Sift the flour, baking powder and mustard into a bowl.
4 Rub in the butter until the mixture resembles breadcrumbs. Stir in the cheese, then lightly beat the egg and add. Tip out on to a bench and gently knead until the mixture becomes a soft dough.
5 Sprinkle some flour then roll out the dough to a 5 mm thickness. Cut into thin fingers, then transfer to a greased oven tray and bake for 10-15 minutes or until golden. Transfer to a cooling rack before serving with the relish.