Beverage preparation machine configured for preparing cold beverages from soluble beverage ingredient and water, said machine comprising: - a cold generation unit for supplying a cooling fluid, and - at least one beverage preparation unit comprising:. a beverage mixing chamber configured for mixing a soluble beverage ingredient and hot water to produce a hot beverage, said chamber comprising a mixing impeller, and. a heat exchanger unit configured for exchanging heat between the beverage produced by the beverage mixing chamber and the cooling fluid supplied by the cold generation unit, characterized in that said machine further comprises:. a beverage circuit comprising the heat exchanger unit and the beverage mixing chamber, said circuit being designed to enable the circulation of the beverage in a closed loop between the beverage mixing chamber and the heat exchanger unit and said circuit comprising a pump for circulating the beverage in the beverage circuit, and. a circulating means (31, 4) adapted for enabling circulation of the beverage in the closed loop between the beverage mixing chamber and the heat exchanger unit, and. a dispensing means (32, 4) adapted for enabling dispensing of the beverage from the beverage circuit though a beverage dispensing outlet. - a cold generation unit for supplying a cooling fluid, and - at least one beverage preparation unit comprising:. a beverage mixing chamber configured for mixing a soluble beverage ingredient and hot water to produce a hot beverage, said chamber comprising a mixing impeller, and. a heat exchanger unit configured for exchanging heat between the beverage produced by the beverage mixing chamber and the cooling fluid supplied by the cold generation unit, characterized in that said machine further comprises:. a beverage circuit comprising the heat exchanger unit and the beverage mixing chamber, said circuit being designed to enable the circulation of the beverage in a closed loop between the beverage mixing chamber and the heat exchanger unit and said circuit comprising a pump for circulating the beverage in the beverage circuit, and. a circulating means (31, 4) adapted for enabling circulation of the beverage in the closed loop between the beverage mixing chamber and the heat exchanger unit, and. a dispensing means (32, 4) adapted for enabling dispensing of the beverage from the beverage circuit though a beverage dispensing outlet.. a beverage mixing chamber configured for mixing a soluble beverage ingredient and hot water to produce a hot beverage, said chamber comprising a mixing impeller, and. a heat exchanger unit configured for exchanging heat between the beverage produced by the beverage mixing chamber and the cooling fluid supplied by the cold generation unit, characterized in that said machine further comprises:. a beverage circuit comprising the heat exchanger unit and the beverage mixing chamber, said circuit being designed to enable the circulation of the beverage in a closed loop between the beverage mixing chamber and the heat exchanger unit and said circuit comprising a pump for circulating the beverage in the beverage circuit, and. a circulating means (31, 4) adapted for enabling circulation of the beverage in the closed loop between the beverage mixing chamber and the heat exchanger unit, and. a dispensing means (32, 4) adapted for enabling dispensing of the beverage from the beverage circuit though a beverage dispensing outlet.