Since prehistoric times, the hearth of a dwelling has been the most important feature in the home. Fire produced warmth for cold climates and also heat so that food could be prepared. Although much has evolved from cave to home, not much has changed in the role kitchens play as the heart of a home. What more could one ask for? Well, the answer, in the kitchen arena, is quite a lot. Innovations in equipment and technology have immensely expanded the market.