Material:
- 0.5 L disposable PET bottle
- Distilled water
- CO2-corkscrew
- iSi soda cartridge
- Tube for corkscrew
- Fill the disposable PET bottle one-third full with distilled water.
- Screw the soda cartridge into the corkscrew.
- Using a tube, pump CO2 directly into the distilled water until the cartridge is empty.
- Seal the bottle and then shake it.
