Don’t confuse one for the otherthese ingredients are essential for baking success.

However, when comparing baking soda vs. baking powder, the key properties of the two ingredients become apparent.

So, what is the difference between baking soda and baking powder?

Baking powder and baking soda in bowl

Credit:(L) Karla Conrad, (R)ivandzyuba/ Getty Images

And what does baking soda do that baking powder doesn’t?

Read on for the scoop from our Test Kitchen pros.

If the baking soda bubbles immediately, you’re good to go.

Clabber Girl baking powder measuring spoon

Credit: Karla Conrad

If the mixture sits relatively still, toss your baking soda and invest in a new box.

What Is Baking Powder?

It’s important to understand baking powder’s powers to compare and contrast baking soda vs. baking powder.

Buttermilk Pancakes

Credit: Jason Donnelly

Baking powder combines baking soda, some acid, and some anti-caking agent (like cornstarch).

Recipes with baking powder simply need heat and moisture to rise as desired.

Most commercial baking powders sold in America are “double acting.”

The second reaction occurs in the oven under the influence of heat.

If the mixture bubbles, the baking powder is fresh enough to use.

If the mixture is still, throw it away and refresh your pantry with a new box.

That’s when baking powder is beneficialit creates even more lift for yourbuttermilk pancakes.

Some baking recipes don’t call for baking soda or baking powder.

So, is baking powder the same as baking soda?

No, but they do overlap in terms of ingredients and purpose.

Baking soda and baking powder both contain sodium bicarbonate.

Can I Use Baking Powder Instead of Baking Soda?

The ingredients are not interchangeable for the reasons mentioned above.

Replace every six to 12 months, and test for freshness each use beyond three months.

It also has odor-absorbing properties, which is why many people have an open box in their refrigerator.

Any of these combinations should work to replace baking powder.