Smart beverage dispenser system and method

The system has a dispenser unit comprising a dispensing head 30 for dispensing liquid into the cup 10, a support 42, wherein the support 42 has a weight sensor 32 and a controller. The controller compares the weight of the cup 10 measured by the weight sensor 32 to an expected weight of the cup when empty to determine a weight offset and to control the amount of liquid dispensed from the dispensing head 30 based on the weight offset. Weighing may allow the controller to determine whether the cup is empty or not. The cup may have a communication tag, barcode or QR code, which may inter alia store the weight of the cup when empty. It may also store information related to previous beverages dispensed into the cup, e.g. their density.