Baking Soda vs. Bicarbonate of Soda: Clearing Up the Confusion

The Name Game

Walk down the aisle in a supermarket in New York, you spot boxes labeled “baking soda.” Do the same in London, and the boxes say “bicarbonate of soda.” The shelves carry the same white powder, only the name changes depending on where you stand on the map. Both names point to one thing: sodium bicarbonate. In the US, “baking soda” wins out. In the UK and many other places, folks say “bicarbonate of soda” or just “bicarb.”

The Science in the Kitchen

Open a cookbook and recipes for cakes, cookies, and pancakes will mention baking soda or bicarbonate of soda. This powder acts as a leavening agent. The moment it mixes with acid and moisture—a splash of vinegar or the tang of buttermilk—it releases carbon dioxide. Bubbles form in the dough or batter, making baked goods rise. Too little, and cookies turn out flat and dense. Just right, and bread comes out fluffy and soft.

Everyday Uses Beyond Baking

Not everything this powder touches ends up in the oven. You’ll find it in bathroom cupboards and cleaning closets for a reason. Tea stains on mugs, fridges smelling not so fresh, or even a patch of heartburn after a big lunch—it comes in handy. Mix a little with water, and you get a gentle scrub for countertops. Sip it dissolved in water, and it can calm an upset stomach. Many toothpastes even list sodium bicarbonate because it helps polish teeth without scratching enamel.

Trouble in Translation

This naming confusion catches a lot of people off guard. Friends visiting from abroad have bought “baking powder” thinking it’s the same thing. It’s easy to see why. Both powders sit next to each other in stores, and both get dusted into dough. Yet they aren’t interchangeable. Baking powder contains baking soda, but it also packs an acid—cream of tartar most often—so it activates with just moisture. Next time you want to swap one for the other, think twice. The cake might not rise as expected. In cooking, small mistakes like this lead to flat bakes and ruined dinners.

Health and Safety

Some people get worried about chemicals in the kitchen. It’s easy to trust something with “baking” in its name, but blink when “sodium” pops up. Years ago, I called my grandmother to check if a spoon of baking soda would ruin her tomato sauce. She just laughed and said her mother did the same. The US Food and Drug Administration lists it as “generally recognized as safe.” Still, swallowing heaping spoonfuls isn’t wise; too much can mess with the body’s acid-base balance. Used in moderation—measured out for recipes or small home cleaning—it poses no real risk in recipes or household chores.

Tips for Avoiding Mix-Ups

If you enjoy baking, double-check labels before squeezing powders into your dough. Supermarkets with international aisles might stock both “baking soda” and “bicarbonate of soda.” If in doubt, read the ingredient list. Only one line matters: sodium bicarbonate. That way, recipes from any country work out just fine, with cookies rising high and no strange flavors thrown in.