Alton Brown stopped by The Late Show With Stephen Colbert to promote his Broadway show Eat Your Science [1], and things got . . . interesting. In true Alton Brown style, the Food Network host promised to make something delicious, but in the least traditional, most scientific way. Using a giant homemade machine (Alton's DIY ice cream maker) with fire extinguishers attached to either side, Alton makes a "miracle dessert" — carbonated pumpkin spice latte ice cream. "I freaking hate pumpkin spice latte. But I'm going to make an ice cream out of it, which I hope will make it better," Alton said of the flavor choice. The pumpkin spice ice cream mixture goes into a fire extinguisher, which is then fired into a "freezing chamber," while at the same time a CO2 fire extinguisher is activated, creating a gallon of ice cream in just 10 seconds. Confused? Watch the video to see how it works for yourself, and see Stephen's reaction as he tastes the final product.