You’re at a bar, ordering a vodka soda. The bartender asks, “Seltzer or club soda?” You freeze. It’s the same thing, right? Wrong. This is the quiet class divide of the beverage world, and getting it right changes your drink—and your vibe.
Let’s clear the air. Both are carbonated water, but their origin stories are totally different. Seltzer is just water with injected carbon dioxide (CO2). That’s it. Club soda starts with the same base, then gets a boost of minerals like potassium bicarbonate, sodium citrate, or table salt.
So why does this matter? Because those tiny minerals give club soda a smoother, rounder mouthfeel. Seltzer hits your tongue with sharp, clean bubbles. Club soda feels a little more like… sophisticated tap water.
