Rinse the lentils and cook until tender in salted boiling water. Rinse and allow to cool. Fry sesame until golden in a pan without oil. Stir in the lentils. Duck breast crosswise incision of the skin, rub with salt and pepper. Heat the oil and fry breast 8-10 minutes (depending on thickness). Cut into slices (breast inside should still be raw), another fry. Squeeze the juice from the oranges, mix with yogurt, season zira, salt and pepper.