- 1 Bottle of Regular (Brown) Soda
- 2% Milk
- Open a fresh, new bottle of brown-colored soda. Coke works great, but any brand of regular cola will do.
- Carefully pour 2% milk into the bottle with the soda until the bottle is completely full.
- Replace the bottle cap and screw it on tightly.
- Now, you will need to exercise some patience. Observe the milk and soda mixture in regular intervals like every half-hour or hour.