The invention relates to a claimed device (1) for producing milk foam and/or warmed milk, comprising a steam supply line (2) that has a steam supply opening (3), said steam supply (2) comprising a tapering first nozzle (4) for obtaining a suction effect in order to suck in milk at a suction opening (5) which is arranged in said first nozzle (4). The device (1) additionally comprises an air supply device (8) for supplying air into the steam supply line (2) through an air supply opening (9). Said steam supply line (2) comprises a tapering second nozzle (10) to obtain a suction effect at the air supply opening (9) which is arranged in the second nozzle (10), and the first nozzle (4) is arranged downstream of the second nozzle (10) with regard to the steam flow direction.