A flavoring system has a portioning device such as a weigher for receiving unflavored food items and sequentially supplying batches of a specified quantity of them, dispenses measured quantities of a flavoring material with a dispenser, applies these measured quantities of flavoring material to the supplied batches and packages the flavored batches of items in a bag. A sensor monitors the discharge of the flavoring material and a sorting device discards packaged products if the sensor detects an abnormality in the discharge of the flavoring material. A plurality of dispensers may be provided for dispensing measured quantities of different flavoring materials.