- Dihydrogen Monoxide
- Take your water and put it in the kettle (as much or as little as you want).
- Wait for the water to boil or reach your preferred temperature (90°C to 100°C should suffice).
- Pour the hot water out from the kettle into a cup.
- Add Dihydrogen Monoxide to cup (again, this is my preference; the more you add, the colder your water becomes).