Cookware, also known as "portable butane gas stove" and "portable oven", is a newly developed kitchen appliance in recent years, which is mostly used for family outdoor leisure.

Piezoelectric ceramics are mostly used for ignition in cassette furnaces. The biggest advantage is that batteries are not needed, but the success rate of ignition is related to the environmental humidity, so it is not easy to ignite when the humidity is high. In addition, it is necessary to hold down the switch to ignite, which is not as fast as electronic pulse ignition.