1) The document describes an experiment using a microwave oven to measure the speed of light by observing interference patterns ("hotspots") created by electromagnetic waves. 2) S'mores and chocolate were used as thermal reception substrates to visualize the hotspots, from which the wavelength and thus speed of light could be calculated. 3) The experiment yielded a measurement of 294,000,000 m/s, which is within 2% of the accepted value of 299,792,458 m/s for the speed of light in a vacuum.