1 lemon, zest only
1 orange, zest only
500g/1lb 2oz plain flour
1 tsp bicarbonate of soda
100驳/3陆辞锄 candied peel
100驳/3陆辞锄 currants
2 tbsp sugar
400ml/14fl oz buttermilk
600ml/20fl oz double cream
50g/1戮oz vegetarian suet