Jammy citrus roly poly

1.For citrus jam, peel and segment oranges and lemons over a bowl to catch juices, then squeeze any remaining juice from pulp, reserving seeds. Peel and segment 2 mandarins, removing seeds, and reserve. Tie up orange, mandarin and lemon seeds in a small piece of muslin and set aside. Squeeze remaining mandarins, add to orange and lemon juices and measure (you’ll need 1 cup). Combine juices and sugar in a heavy-based saucepan and bring to a simmer over medium heat, stirring occasionally until sugar dissolves. Add liqueur, citrus segments and seeds to syrup and simmer for 20-25 minutes or until syrupy. Cool completely before using.

2.Preheat oven to 180C. Sift flour, sugar and ¼ tsp salt into a bowl, add butter and rind and, using fingertips, rub in until mixture resembles breadcrumbs. Add buttermilk and stir until combined. Turn onto a lightly floured piece of baking paper and form into a 25cm log. Roll to a 27cm x 30cm rectangle and spread with two-thirds of the citrus jam, leaving a 3cm border. Brush border lightly with water, then roll up lengthways, using paper as a guide. Press lightly to seal joins, brush lightly with buttermilk, then place, seam-side down, on paper. Brush surface with buttermilk, then wrap paper over, folding to seal, and tie ends with string. Transfer to an oven tray and bake for 35 minutes or until golden. Unwrap, cut into slices and serve warm with extra citrus jam if desired and thick cream or ice-cream to the side.