Initial FBI response indicated suspicion of IED pressure cooker bombs. Fat is heated in a pressure cooker. An electric pressure cooker integrates a timer. Jars can be sterilized by boiling or with a pressure cooker. She was "partially responsible for the introduction of the pressure cooker to Australia". A newer approach is to use a pressure cooker. Higher temperatures may be achieved with a pressure cooker. Some armoured vehicles come with a built-in pressure cooker. A pressure cooker lid was found on a nearby rooftop. A relatively new concept is the commercial gas pressure cooker. A second pressure cooker bomb was discovered four blocks away. The origin of the explosion was found to be a pressure cooker bomb. It is the forerunner of the autoclave and the domestic pressure cooker. Pressure cooker bombs are relatively easy to construct. Pasta will also require a pressure cooker.