Abstract: A system for dispensing a customised nutritional serving is made up of ingredients stored within a device incorporating the system. The device has a controller in whose memory is stored an inventory of the ingredients available in the device, their compositions and properties and customer profile data. The controller is programmed to formulate a serving which best matches the customised serving selected by the customer within constraints set by the programming taking into account the inventory of ingredients and the health profile of the customer. The customer is then presented with the selected serving and either accepts it or modifies it. The device is then programmed to prepare and dispense the final selection.