Nordic Ware Microware Quick Popper Microwave Popcorn Popper No BPA Before initial use and after subsequent uses, hand wash with warm, soapy water Do not cook with oil or butter during popping phase, as damage to popper may result. You may add it after your corn has popped. Never exceed 1/4 cup kernels. Do not use with disposable power concentrating cups, which will damage your popper. Use oven mitts when handling  popper will be very hot. Top rack dishwasher safe