A healthy alternative to bagged microwave popcorn, our heat-resistant borosilicate-glass popcorn maker pops up to three quarts of fluffy popcorn without using oil. The round shape is ideal for popping every kernel without burning and it's designed specifically for microwave use. The silicone lid measures a precise amount of kernels, keeps them from popping out of the carafe and evenly distributes butter and spices while cooking.