100g/3陆oz dried cranberries
1陆 unwaxed oranges, zest only
400g/14oz plain flour
2 tsp baking powder
1 tsp caraway seeds
50驳/1戮辞锄 caster sugar
1 tsp table salt
50驳/1戮辞锄 unsalted butter, chilled and diced
175ml/6fl oz buttermilk
1 large free-range egg