Chop cranberries and raisins finely, pour rum in a bowl and marinate for about 10 minutes. Coarsely grate the marzipan.
Briefly knead flour, baking powder, sugar, salt, butter, marzipan, egg and rum fruits in a bowl with your hands.
Roll out the dough on a floured work surface to a thickness of approx. 1.5 cm and cut out dough circles with a round cookie cutter (approx. 7.5 cm Ø). Place on a baking tray lined with baking paper. Whisk the egg yolk and milk and brush the dough circles with it.
Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for 10-15 minutes. Remove and let cool on a cake rack for about 30 minutes.
Stir the jelly in a small bowl until smooth. Carefully fold in the clotted cream with a small spoon and serve with the scones.