I love spicy water! Putting it that way makes me thirsty for more.<p>I retired my Sodastream claptrap (for both practical, economic, and ethical reasons), and got a tank of CO2, a regulator, and an adaptor for standard PET soda bottles.<p>The important thing for getting a lots CO2 into the water is chilling it as cold as possible, and a good trick is to put a little bit of water in a bottle, setting it on the side in the freezer so you get long thin ice at the bottom, then whacking it to break up the ice and give it lots of surface area, then adding tap water to it. The trick is figuring out the right amount of ice to make for the size of the bottle and water temperature, but once you find the balance, you can get the water very cold this way, and get a lot of CO2 into it to make it extremely fizzy.<p>You can also boil the water beforehand and let it cool to room temperature before chilling, and that will remove most of the air dissolved in it, which allows more CO2 to dissolve. But that's a minor optimization (that takes time and energy and hassle) on top of the important thing which is simply chilling it to as close to 0 degrees as possible.<p>Then buy heavy glasses or mugs and put them in the fridge or freezer, so you won't need any ice (which makes it go flat quicker), and it makes it delicious and satisfying to serve and drink. A&W Root Beer drive-ins are famous for their frozen mugs, which freeze the root beer into slush, and they sell big thick A&W mugs to use at home. There used to be one in Mountain View near the railroad tracks, where I got mine.<p>I've been enjoying Darcy O'Neil's "Art of Drink" for tips and recipes. He has several videos about carbonated water itself, and many others about different flavors and formulas. He even shows how to make super spicy soda with Capsaicin!<p>Introduction to Carbonation<p><a href="https://www.youtube.com/watch?v=jhsOFFYc-N0" rel="nofollow">https://www.youtube.com/watch?v=jhsOFFYc-N0</a><p>Carbonating Water: The 2 Most Important Things To Do<p><a href="https://www.youtube.com/watch?v=jBNJ7yzIvtw" rel="nofollow">https://www.youtube.com/watch?v=jBNJ7yzIvtw</a><p>Quick Carbonation Setup Soda Water<p><a href="https://www.youtube.com/watch?v=bWkvNGQsOes" rel="nofollow">https://www.youtube.com/watch?v=bWkvNGQsOes</a><p>Seltzer, Club Soda, Carbonated Water, Soda Water: What's the Difference? Which One Tastes Better?<p><a href="https://www.youtube.com/watch?v=vgTj-xWBXZw" rel="nofollow">https://www.youtube.com/watch?v=vgTj-xWBXZw</a><p>Electrolyte Mineral Water Formulation<p><a href="https://www.youtube.com/watch?v=rUS7qi6_xvQ" rel="nofollow">https://www.youtube.com/watch?v=rUS7qi6_xvQ</a><p>Soda Frequently Asked Questions<p><a href="https://www.youtube.com/watch?v=5l9qC9E5qRc" rel="nofollow">https://www.youtube.com/watch?v=5l9qC9E5qRc</a><p>Carbonated Water on Tap<p><a href="https://www.youtube.com/watch?v=Un6_OXYiRZA" rel="nofollow">https://www.youtube.com/watch?v=Un6_OXYiRZA</a><p>Capsaicin Hot Drops for Drinks<p><a href="https://www.youtube.com/watch?v=WXHAypkueps" rel="nofollow">https://www.youtube.com/watch?v=WXHAypkueps</a>