Fondue is the ultimate entertaining tool Swissmar ceramic fondues are best suited for cheese fondue. Combine the smooth heat conductivity of the ceramic with the Swiss caquelon shape and you're sure to have an amazing cheese fondue experience. The Swissmar Heidi ceramic fondue set is a great way to celebrate the authentic Swiss tradition using emmenthal and gruyere cheese. Safe for use on cook top, in oven, in microwave and with traditional fondue-fueled burners.