Is Bicarb Soda the Same as Baking Soda?

Let’s Clear Up the Confusion

Walking through the supermarket, the shelves can get overwhelming. On one aisle there’s “bicarb soda.” A few steps away, “baking soda” sits on another shelf. For years, folks have wondered: same thing or different? Actually, both point to sodium bicarbonate. In Australia, New Zealand, and the UK, you’ll see “bicarb soda.” Americans usually call it “baking soda.” It’s not just a language thing—labels can trip up even the best home cooks.

Why Knowing The Difference Matters

I remember a friend’s tale: cake flat as a pancake. She grabbed baking powder, thinking it was bicarb soda. Baking powder is another story—it’s bicarb soda mixed with acid and sometimes starch. Soda is pure sodium bicarbonate. It reacts with acidic stuff—think lemon juice, buttermilk, or yogurt—in recipes to release carbon dioxide, giving bread and cakes that lift. Baking powder tries to do it all by itself, adding its own acid. Using them interchangeably risks recipes going sideways, either tasteless or dense.

Health and Safety in Everyday Use

Bicarb soda isn’t just a kitchen staple. My grandma kept a box handy for upset stomachs. For generations, this kitchen helper tackled heartburn because it neutralises stomach acid. The FDA in the US and FSANZ in Australia approve sodium bicarbonate as safe for baking and limited household uses, but overdoing it brings problems—high sodium, nausea, and other side effects. For cleaning, it can scrub pans or freshen up fridges, but no need to go wild and use it as medicine for every ailment. Sticking to the food-grade version for home use, and following package directions, covers the safety basics.

Supporting Facts: Trust in the Science

Food scientists and baking experts have tested the basics. Studies from the Journal of Food Science highlight sodium bicarbonate’s ability to release CO₂ in the presence of acid and moisture. No acid means no rising. Without “bicarb” or “baking soda,” that batch of cookies won’t fluff up the way recipes promise. The American Chemical Society and Australia’s CSIRO have both produced explainer videos demystifying the science behind sodium bicarbonate.

Practical Tips to Remember

I’ve fallen into the “is this the right one?” trap more than once, especially swapping between UK and American recipes. Best approach: keep both bicarb soda and baking powder on hand. If the recipe mentions vinegar, lemon, or buttermilk, it’s probably looking for pure bicarb soda. For those who prefer less confusion, a marker on the pantry container saves plenty of headaches later. Never use cleaning bicarb for food—labels matter.

Simple Solutions

Recipe books, food sites, and apps now list substitutions and conversions. If you only have baking powder, it’s possible to substitute—tripling the quantity comes close, though taste can go off if acids build up. Companies can help shoppers by printing “also known as” on packaging. Schools, food blogs, and baking shows do a good job spreading the word. When in doubt, a quick online search or question at the local shop usually does the trick.