A fast, mess-free solution for melting butter, chocolate and even making sauces in the microwave! Our two-piece set of microwaveable measuring cups is a fast, mess-free solution for reheating gravies and sauces quickly and neatly in the microwave. The measuring cup and pitcher is a quicker and more functional alternative to individual measuring cups. The microwaveable measuring cups can be used separately, or invert the small 1-cup/200ml pitcher over the large 2-cup/500ml pitcher and you've got a self-venting cover that allows steam to escape while preventing messy microwave splatters.