Conran designed a number of ingenious tea and coffee related products for the Culinare brand. These designs include coffee pots, a teapot and plunger mug, which address the problem of how to keep beverages hot and fresh. The teapots and cafeteria incorporate a thermal barrier that keeps tea and coffee hot for up to two hours. The patented plunger mechanism halts the brewing process by isolating coffee grains or tea leaves to prevent stewing or bitterness.