A Siemens cooktop is characterized by functionality combined with a sleek design. For example, Siemens ceramic cooktops often have expandable cooking zones or a timer function. With the timer function, you can the cooking time for your pasta on your Siemens electric cooktop in advance, so it'll be exactly al dente when you drain it. With the extendable zone, you can create space for a large soup pot or roasting pan. You can wok meat and vegetables at a high temperature on a gas cooktop with a wok burner.