Heated beverage container

A method of controlling the temperature of liquid contained in a container that is separate from a heater, the method comprising:

• detecting at a temperature sensor a first temperature of the liquid at a first time;
• detecting at the temperature sensor a second temperature of the liquid at a second time;
• determining at a microcontroller, a temperature rate of change based on the first and second temperatures;
• controlling the heater based on the temperature rate of change and the at least one temperature curve.

The method of 14 further comprising:

• receiving at an input device an input signal;
• determining at the microcontroller a threshold temperature based on the input signal;
• comparing the threshold temperature to the first or second temperature;
• and
• controlling at least one heater element based on the threshold temperature and the first or second temperature.

An apparatus for heating beverages comprising:

• a heater;
• a container for holding a liquid, subject to temperature increase by said heater, the container removably attached to the heater, the container having:
• a chassis having an open top for receiving the liquid, a circumferential wall, and an open bottom;
• an inner cup nested inside the chassis, the inner cup having an open top for receiving the liquid, a circumferential wall spaced from the circumferential wall of the chassis, and a closed bottom configured to contact the heater when the container is attached to the heater;
• and
• a sealing mechanism for sealing the chassis to the inner cup.