The coffee machine comprises at least one hydraulic infusion circuit comprising at least one feed pump (2) for supplying water, at least one boiler (3) hydraulically connected to the feed pump (2) by cascade connection, at least one infusion unit (4) that is hydraulically connected to the boiler (3) by cascade connection and through which a flow rate of hot water can pass for execution of an infusion cycle, means for regulating the flow rate of the water, means for measuring said flow rate of the water, and a feedback controller (6) connected to the regulating means and to the measuring means and configured to compare in real time the current value of the flow rate of the water, as measured by the measuring means, with a corresponding reference value, and to control the regulating means so as to eliminate any deviation of the current value with respect to the corresponding reference value.