Hybrid boiler system, allowing simultaneous coffee extraction and milk frothing; Thermal balance group head balances temperature to minimize extraction differences; Various adjustable parameters: extraction temperature / extraction time / water flowing to coffee bed time / soaking time; Steam controlled by an NTC temperature sensor; automatic preset for milk frothing temperature 1 L steam boiler and adjustable steam temperature; Design of independent hot water nozzle, hot water time can be adjusted; 2.5 L water tank / automatic water supply and drainage system