A modular method of manufacturing a set of beverage production machines with different beverage-related functions. The machines are designed for producing a beverage on the basis of pre-portioned ingredient packages. The method includes providing a plurality of identical core units having control circuitry and a beverage production module for housing an ingredient package and feeding a liquid to the interior of the ingredient package, providing a plurality of different base platforms that differ as to beverage production functions, and manufacturing a set of different beverage production machines by mounting respectively at least one of the core units on a top surface of one of the differing base platforms while also mounting water reservoirs on the base platforms.