We test every gas hob at low and high heat. 

For all gas hob, it will be fare well enough to cook over medium heat. But a good product can help the Chef to boil quickly and simmer steadily. 

For high-heat cooking, we use a standard size pot, filled with about 4 L of water, on the largest burner, which normally 3500 W. We jack up the burner to the maximum fire setting and note the time with when the water heats up. 

For low-heat cooking, we use the smallest burner to melt chocolate and then simmer milk and water, evaluate how well the hob hold a steady simmer temperature without dropping too low or burnt the contents of the pan.