A container for an aerosol-generating substrate is provided, the container including a piercing area, wherein the electrically heated aerosol-generating device has a piercing element configured to pierce the piercing area; a casing; and a cap including the piercing area and a heater, the heater defining the boundary of the piercing area. An electrically heated aerosol-generating device is also provided, including a power supply; a cavity configured to receive a container containing an aerosol-forming substrate, electrical contacts connected to the power supply and configured to couple the power supply to the heater of the container through electrical contacts of the container; and means for piercing the piercing area of the container when the container is received in the cavity. A method of manufacturing a container including an aerosol-generating substrate is also provided.