Mustard Fillets

Preparation:

Preparation: Heat the oil in a pan, cook the fillets over high heat, remove them and keep them warm. Remove the oil from the pan and melt half the butter, dilute the mustard, add the Worcestershire sauce, the cognac and a pinch of salt. Cook the sauce while stirring over high heat. Remove from the heat, add the remaining butter and let it melt. Place the fillets on a serving plate, drizzle them with the sauce and serve immediately.