Here’s the simple truth: seltzer water is just plain water that has been pumped full of carbon dioxide gas. That’s it. No minerals added, no flavors, no secret ingredients—just water and bubbles.
It’s the minimalist of the fizzy world. Think of it as the plain white t-shirt of sparkling waters—simple, reliable, and always in style.
Now, soda water is a slightly different beast. While it also gets its fizz from carbon dioxide, it usually has a tiny amount of minerals added, like sodium bicarbonate (baking soda) or potassium sulfate.
