Mix the salt, black pepper, curry, paprika and thyme together and rub the duck breasts with it.
Cover the duck breasts in a pan over medium heat in oil that is not too hot and fry on the skin side for about 15 minutes. Turn and cook covered in 6 minutes. Take out of the pan and keep warm.
Skim off the excess frying oil with a spoon. Deglaze the roasting mixture with the balsamic vinegar and reduce the vinegar almost completely. Pour in the cassis and duck stock and reduce to a syrupy level over high heat. Take the pan off the fire and stir in the currant jelly and let it boil down again a little. Carefully season with salt, pepper and mustard.
Slice the duck breast fillets thinly and pour the hot sauce over them.
Side dish: glazed carrots, fried potato noodles.
Wine recommendation: Pinot Noir (Côte d`Or Grand Cru).