Mixing unit and method for mixing a liquid product

A mixing unit for mixing a liquid product, the mixing unit comprising:

• a tank configured to hold the liquid product;
• a fluid nozzle attached to a bottom of the tank and configured to inject a fluid flow of the liquid product into the tank;
• and
• an actuator positioned below the tank;
• wherein the fluid nozzle has a first outlet that opens in a sideways direction, a second outlet that opens in an upward direction, and a valve plug configured to selectively open and close the first outlet and the second outlet, the mixing unit operable in a low stage operational mode during which the first outlet is open and the second outlet is closed for effecting mixing in a lower region of the tank and in a high stage operational mode during which the first outlet is closed and the second outlet is open for effecting mixing in an upper region of the tank,
• wherein the actuator is configured to switch the mixing unit between the low stage operational mode and the high stage operational mode.