If you’re a sparkling water fanatic, buy plain seltzer (no flavors) and add your own minerals. A pinch of baking soda (for alkalinity) plus a few drops of liquid minerals.
Shake gently. You’ve just made a DIY Topo Chico. Your friends will think you’re a wizard. Don’t correct them—let them believe.
Baking soda tip: Use aluminum-free. Otherwise, your sparkling water might taste vaguely metallic. Like kissing a bicycle.
