Video: How to get rid of Christmas leftovers Eating up the left over chocolates, biscuits and sweets from Christmas can often get in the way of any resolutions to start the new year with a healthier diet. Rather than guiltily snacking on these treats, however, this video provides an alternative solution for how to get rid of them. With the help of some potassium chlorate, a chemical that is often used in fireworks, and a little heat, the sugar in the sweets spontaneously combusts - with explosive results. But as the warning at the start of the video says - this is perhaps not one to try at home.