How to Make Seltzer Water

How to Make Seltzer Water. Why spend extra money on bottled seltzer when you can make it at home? Plus, by using fewer plastic bottles, you can reduce your carbon footprint. You will need Water A seltzer bottle And a soda charger A seltzer kit (optional) (optional) (optional) A carbon dioxide tank (optional) (optional) (optional) and a plastic 2-liter bottle (optional) (optional) (optional). Step 1. Make sure your seltzer bottle – also called a soda siphon – and charger are compatible. Chargers come in screw-in and snap-on varieties. You can also buy a kit that includes both parts; some fit under the kitchen sink. Step 2. Fill your seltzer bottle with tap water or filtered water according to preference. Step 3. Fit the charger – a small canister containing pressurized carbon dioxide – onto the spray nozzle on the seltzer bottle. When it screws in or snaps on, you'll hear a "whoosh" as the water carbonates. You can also use a carbon dioxide tank connected to a plastic two-liter bottle. Step 4. Press down on the seltzer bottle's plunger and serve your homemade seltzer water. It's that easy! Did you know Years ago, seltzer water was delivered to people’s doorsteps in glass siphons; empties were picked up to be refilled.