Method and apparatus for beverage formation with liquid delivery control

A beverage forming machine comprising:

• a brew chamber for receiving a brew cartridge;
• a reservoir for receiving precursor liquid for use in forming a beverage, the reservoir being fluidly coupled to the brew chamber and having a lid that is movable between open and closed positions to open and close an access opening through which precursor liquid is provided into the reservoir;
• a brew indication sensor for receiving an indication from a user to begin a brewing cycle;
• a heater for heating precursor liquid in the reservoir;
• a detector for detecting a desired temperature of precursor liquid in the reservoir;
• an air pump for providing pressurized air to the reservoir to cause the precursor liquid to be delivered to the brew chamber;
• and
• a controller constructed and arranged to control operation of the heater and the air pump and including a sensor to detect that the reservoir lid is in the closed position;
• wherein the controller is adapted to begin a brewing cycle only if the reservoir lid is detected to be closed, is adapted to control the heater to heat the precursor liquid in response to the indication to begin a brewing cycle and is adapted to cause the air pump to deliver pressurized air to the reservoir in response to the detector detecting that the precursor liquid is at the desired temperature.