Device for heating and frothing milk

A device for heating and frothing milk, usable for preparing a hot beverage, comprising

• a steam generator,
• a jet pump operated by steam, said jet pump comprising a steam inlet through which pressurized steam is injectable into the jet pump to generate a steam jet, a first suction inlet and a second suction inlet through which respective fluids are drivable by the steam jet into the jet pump to mix with said steam jet, wherein the first suction inlet is configured to connect to a milk reservoir, and
• a steam valve connected to the steam inlet of the jet pump and switchable between a first position in which the steam inlet of the jet pump is in fluid communication with the steam generator, and a second position in which the steam inlet of the jet pump is shut off from the steam generator,
• said device further comprising
• an air inlet connectable or connected to the second suction inlet of the jet pump for suction of air into the jet pump, and
• a bypass valve connected to the second suction inlet of the jet pump and having a bypass inlet connected to the steam generator in parallel with the steam inlet of the jet pump, said bypass valve being switchable between a first position in which the second suction inlet of the jet pump is shut off from the steam generator, and a second position in which the second suction inlet of the jet pump is in fluid communication with the bypass inlet of the bypass valve for suction of steam into the jet pump through the second suction inlet.