With more people making the switch from sugary sodas to healthier carbonated beverages and experimenting with their own recipes at home, you probably know many people with commercial carbonation systems like the SodaStream®, and may have even considered buying one of your own. While these store-bought systems can be a convenient way to get started enjoying your own homemade beverages, you may be surprised to learn that it's easier than you think to build your own carbonation system. Not only are these DIY systems fun to build, but they are also much more versatile and cheaper to operate and maintain.
Unlike systems that require proprietary bottles and small CO2 canisters that cannot be easily refilled and must be repurchased frequently, DIY carbonation systems utilize standard CO2 tanks of any size that can be refilled locally at a fraction of the cost, and are compatible with any plastic bottle that uses a standard bottle cap. While the SodaStream® is only designed to carbonate water and requires you to purchase expensive ingredients in order to flavor it, by experimenting with different levels of carbonation you can use your DIY carbonation system to carbonate juice, tea, wine, and other beverages.
Attach the filled CO2 tank, CO2 regulator, vinyl tubing, and ball lock keg coupler together. Open the valve on the CO2 tank but leave the valve on the CO2 regulator closed. Depending on the type of liquid you are carbonating and your desired level of fizziness, you will need to adjust the pressure adjustment knob on your regulator until the top gauge displays the desired pressure between 35-50 PSI.
Fill your bottle with a cold beverage. CO2 dissolves more easily in cold liquid, so the colder the better. Be sure to leave about 2-1/2 inches empty to allow room for the CO2.
Squeeze out any extra air in the bottle until the liquid reaches the top, then screw the carbonation cap onto the bottle.
Snap the coupler onto your carbonation cap. Open the valve on the regulator to allow CO2 to flow into your bottle. It will happen instantly.
Shake the bottle for 20-30 seconds to ensure that the CO2 has dissolved throughout the liquid. If you do not properly shake the bottle, the CO2 will remain at the top of the bottle and your beverage will not be fizzy.
WARNING: Be sure to shake your bottle cap-side up, NOT upside down. We once had a customer who shook his bottle upside down, which backflowed liquid into his gas line and possibly into his regulator. Luckily, it did not break his regulator. Unluckily, our sales associate that troubleshot the issue discovered the problem when the liquid sprayed all over his shirt!
Close the gas valve. Remove the keg coupler and the carbonation cap and enjoy your newly carbonated beverage!
Store your carbonated beverages under pressure to keep them carbonated. You can use the carbonation cap to keep your beverages carbonated or to re-carbonate a flat beverage.