Abstract: A moulding device (10) for moulding three-dimensional products (76) from a mass of foodstuff comprises a moulding roller (16) and a filling device (18). The moulding roller (16) has a moulding surface with at least one mould cavity (44) which is delimited by a mould cavity (44) opening. The filling device (18) has a dispensing mouth (36) and a pump. The dispensing mouth (36) and the mould cavity (44) opening each have, viewed in the direction of the movement path, a front edge and a rear edge which is situated at a fixed distance thereof. A position-determining device determines the position of the front edge of the mould cavity (44) opening with respect to the front edge of the dispensing mouth during the movement of the mould cavity (44) opening and the dispensing mouth (36) with respect to each other. A control unit controls the pump on the basis of the position-determining device during the movement of the mould cavity (44) opening and the dispensing mouth (36) with respect to each other.