Leaving aside an open fire, a gas hob is among the oldest varieties of cooking apparatus still available today. It works by emitting a steady stream of flammable gas, which, once ignited, can be used for cooking. While once you’d need to ignite the gas yourself using a match or a lighter, gas hobs now come with an electric ignition – and, as we’ll see, this isn’t the only innovation that modern gas hobs enjoy. Let’s take a closer look at this enduring and effective technology.