We also put a small bottle of spring water alongside them to test the instant-ice trick. The idea was to try to cool the soda and the water below their freezing point without turning them solid. Eren, Gus and my 3-year-old daughter, Hildy, didn’t seem to care as they slurped down cups of the stuff. Our spring water might not have been pure enough, and we may have waited too long. “You have to find just the right amount of time to super cool it,” Dr. Castellini said.

Source: New York Times January 31, 2019 15:58 UTC