Preparing and dispensing mixed beverages

A beverage mixer and dispenser, comprising:

• a housing defining
• a mixing chamber in which powdery drink extract and hot water can be joined to produce hot beverages, the mixing chamber defining a lower outlet;
• and
• a cream chamber disposed below the mixing chamber and arranged to receive hot beverages from the outlet of the mixing chamber;
• a rotatable mixing rotor disposed within the mixing chamber to mix the hot water and powdery drink extracts;
• and
• a rotatable first cream rotor disposed within the cream chamber to aerate the hot beverage, the cream chamber defining an outlet through which the aerated beverage is dispensed into a receiving vessel for consumption,
• wherein the first cream rotor is approximately cup-shaped in a non-rotating state, the circumferential edge of the first cream rotor abutting against a dividing wall between the mixing chamber and the cream chamber, thereby creating a seal between the mixing chamber and the cream chamber, and, wherein, in a rotating state, the first cream rotor flattens under centripetal force.