A base/additive product feeding unit for a machine for the production and/or distribution of ice cream, or other ice cream product, comprises a plurality of storage tanks for delivering predetermined quantities of base/additive products used to prepare ice cream in a batch freezing chamber provided with a stirrer and heat treatment means. The connection between the storage tanks and the batch freezing chamber is accomplished by an intake having a plurality of side inputs connected to respective storage tanks and an additional input made in a cover of the intake and connected to a further storage tank in such a way as to allow at least two storage tanks to be superposed on each other.