Abstract: The invention concerns a beverage preparation apparatus (100), said apparatus comprising at least one chamber (1) for receiving and mixing water and at least one soluble beverage ingredient, said chamber comprising: —a lateral side wall (11) defining an internal mixing volume, —a bottom wall (12) comprising a beverage outlet (3), —at least one water supply device (2) configured for creating a jet of water (21) and orienting said jet of water inside the chamber, —at least one rotating device (4) configured to rotate around a rotational axis inside the mixing chamber, said rotating device comprising blades (41), wherein the blades of the rotating device are freely rotatable around the rotational axis, and wherein the jet of water introduced in the chamber is oriented to hit the blades of the rotating device and actuate the rotation of the rotating device around the rotational axis.