An anesthetic breathing apparatus (1) is disclosed including a processing unit (10), a breathing circuit (20) for providing an inspiratory patient gas mixture of re-breathed gas and/or fresh gas to a patient (40) fluidly connected to said breathing circuit, and a fresh gas supply (30) controllable by said processing unit (10) for supplying a flow of said fresh gas to said breathing circuit in a composition including oxygen and at least one anesthetic agent (AA). A user (50) interface includes a first user input element (51) for receiving operator input for an anesthetic target value including an end expiratory concentration of said AA (EtAA) target value and/or an end expiratory minimum alveolar concentration (EtMAC) target value of an end expiratory MAC value of said patient, and a second user input element (52) for receiving operator input for a desired control profile for said fresh gas supply for obtaining at least said anesthetic target value. The inspiratory patient gas mixture is controlled based on at least said anesthetic target value, said oxygen target value, and said desired control profile.
