What Does Baking Soda Do In Cookies? (2024)

And how is it different from baking powder?

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What Does Baking Soda Do In Cookies? (2)

Even the most amateur bakers know one thing to be true: Baking is a science. Leaving out even one ingredient (or using the right ingredients in the wrong amounts) can result in a decidedly un-delicious disaster.

But how, you ask, can baking soda be so important when it looks so unassuming? Here's what you need to know about the tiny-but-mighty leavening agent — and what the heck it's doing in your cookie recipe:

Baking Soda vs. Baking Powder

Baking soda and baking powder are both leavening agents, or ingredients that make baked goods rise. They look almost identical and they have similar purposes, but they are not the same thing and they can't always be used interchangeably.

When baking soda, also called sodium bicarbonate, is combined with an acid (like buttermilk or lemon juice) and a liquid, it produces the carbon dioxide that helps the dough or batter rise.

Baking powder, meanwhile, already contains the sodium bicarbonate and acid it needs to become activated—all it needs is a liquid to produce carbon dioxide. Most recipes that call for baking powder are referring to the double-acting varieties, which react twice in the baking process: Once when it's combined with liquid, and again when the product is heated.

What Does Baking Soda Do In Cookies?

So, if baking soda and baking powder both create carbon dioxide, are they really that different? Yes and no. Baking soda is used in recipes that include one or more acids. When the recipe doesn't include an acid, baking powder is used. A recipe that calls for both ingredients probably contains an acid, but not enough to completely leaven the batter or dough.

Baking soda also serves another important purpose when it comes to cookies: It encourages spreading by raising the mixture's pH, which slows protein coagulation. This gives the dough more time to set before the eggs set, which results in a more evenly baked cookie.

Baking Soda Substitute

Don't try to substitute baking soda in cookie recipes that are quite acidic (like snickerdoodles or lemon crinkles). Substitution works better when you're dealing with something sugar-based and dense (like peanut butter or chocolate chip).

You technically can use baking powder as a baking soda alternative, but you'll need to consider a few factors first:

  • Baking soda is generally about three times stronger than baking powder, so adjust your recipe accordingly.
  • Baking soda and baking powder can produce cookies with different textures. Baking soda is typically used for chewy cookies, while baking powder is generally used for light and airy cookies.
  • Since baking powder is comprised of a number of ingredients (baking soda, cream of tartar, cornstarch, etc.), using it instead of pure baking soda will affect the taste of your cookies.

You can also try potassium bicarbonate, a dietary supplement that is often recommended as a baking soda alternative for people with high sodium levels, as a substitute. If you're not watching your sodium intake, you'll probably want to add a pinch of salt to get the closest flavor match.

Learn more: What's a Good Baking Soda Substitute?

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What Does Baking Soda Do In Cookies? (2024)

FAQs

What Does Baking Soda Do In Cookies? ›

Baking soda also serves another important purpose when it comes to cookies: It encourages spreading by raising the mixture's pH, which slows protein coagulation. This gives the dough more time to set before the eggs set, which results in a more evenly baked cookie.

What happens if you don't put baking soda in cookies? ›

You technically can leave out baking soda in certain recipes (like chocolate chip cookies or pancakes) in a pinch, but you need to understand that your finished product will not be as light and fluffy as the recipe intended. Unless you have no other option, you really should use a leavening substitute.

What does baking powder do for cookies? ›

Baking powder simply adds carbon dioxide to the equation, providing a more forceful pressure that encourages a dough to spread up and out.

Can I replace baking soda with baking powder in cookies? ›

Remember that baking soda is 3-4 times stronger than baking powder, so you'll need a lot more baking powder to get the same leavening action. As a general rule, triple the amount of baking powder for the amount of baking soda called for in a recipe.

What is the secret to chewy cookies? ›

Cornstarch helps product soft and thick cookies. Using more brown sugar than white sugar results in a moister, softer cookie. An extra egg yolk increases chewiness. Rolling the cookie dough balls to be tall and lumpy instead of wide and smooth gives the cookies a bakery-style textured thickness.

Can I leave baking soda out of a cookie recipe? ›

For baked goods that don't require too much leavening, such as cookies or pancakes, it's actually OK to leave out the baking soda completely — they just won't be as light and fluffy. If you do go this route when making pancakes, Gan recommends pouring less batter into the pan to cover the same surface area.

What does cornstarch do to cookies? ›

“You can count on [it for] a softer and more tender crumb.” “A bonus benefit is it prevents the cookie from spreading too much while baking,” he adds, noting that a more compact, thick cookie typically yields a chewier outcome. But incorporating cornstarch isn't the only tip to make a cookie more palatable.

What happens to cookies with too much baking soda? ›

Using too much baking soda or baking powder can really mess up a recipe, causing it to rise uncontrollably and taste terrible. But don't freak out if you accidentally poured too much baking soda in cookie dough or added too much baking powder to cake batter. Depending on the situation, you might be able to fix it.

Why did my cookies come out flat? ›

If your cookies come out of the oven looking flat, you may not have adequately chilled the dough before baking. Chilling times may vary depending on the cookie you're making, but you should typically chill cookie dough in the refrigerator for at least two hours before you pop it in the oven.

What happens if you accidentally use baking powder instead of baking soda? ›

Baking powder: Baking powder can be used to replace baking soda, though not at a 1-to-1 ratio. Because the former is not as strong as the latter, it's important to use three times the amount of baking powder as baking soda. Be aware, a slightly bitter, off-putting taste might result from using that much baking powder.

Why are my cookies crumbly and not chewy? ›

Too Much Flour

It doesn't take much—in this case, my mom and I added just 3/4 cup extra flour to the dough. The cookies tasted good, but were dry and definitely crumbly. To make the cookies more tender, Betty Crocker suggests adding 2 to 4 tablespoons of softened butter, or 1/4 cup of sugar, to the batter.

Should I use baking powder or baking soda in sugar cookies? ›

Ingredients For the Perfect Sugar Cookie Recipe:

Baking powder – This gives the sugar cookies lift, without adding too much spread or browning. Fine sea salt – So important to balance the sweetness! Unsalted butter – It's important that your butter is at a cool room temperature, otherwise your cookies may spread.

Are my cookies ruined if I forgot baking soda? ›

It is possible to make cookies without baking soda and banana bread without baking powder. It's important to note that your batter or dough will not rise when baked in the oven, and the resulting treats will be dense and not airy.

What happens if you add too much baking soda to a cookie recipe? ›

Using too much baking soda or baking powder can really mess up a recipe, causing it to rise uncontrollably and taste terrible.

Why do you have to mix baking soda with water for cookies? ›

The recipe for The Best Chocolate Chip Cookies claims that the addition of a small amount of water, “creates steam as [the cookie] bakes, working with the baking soda to puff the cookies up.” Others claim mixing warm water with baking soda helps remove clumps and disperses it with the other ingredients in the recipe.

What does dissolving baking soda do to cookies? ›

Baking Soda Delays The Setting Process And Allows The Cookies To Spread More. In the presence of baking soda, the cookies take longer to firm up and set, which makes it easier for the melted butter, dissolved sugar, and liquids to spread the cookies.

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