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If your favorite recipes are falling flat, it’s possible that your baking soda or baking powder are no longer operating optimally! Unless you’re a frequent baker, the open box of baking soda in your pantry has probably outstayed its welcome.

This article will make use of baking soda. However, the same guidelines apply to baking powder. You may learn more about baking soda and baking powder by clicking here. Okay. Let’s keep going.

How long does baking soda last?

Unopened, baking soda will last until the best-by date on the box, which is usually 2 years. A package of baking soda or baking powder should be used within six months after being opened. It loses its potency and strength, not because it grows stale or moldy.

Baking soda is a leavening ingredient that is used to make food frothy. When baking soda is coupled with acidic foods, a chemical reaction occurs. Consider this: baking soda (base) Plus vinegar (acid) Equals spectacular volcano! When baking, this similar reaction provides food a lift, resulting in fluffy pancakes, cookies, cupcakes, muffins, cakes, biscuits, and so on. The amount of lift it can generate diminishes with time. When a package of baking soda is opened, it starts to gently absorb moisture. The extra moisture decreases the reaction’s strength over time. Extreme temperatures, either cold or hot, may also limit its effectiveness.

Baking Soda Test

We undertook a baking experiment to test this notion. We prepared two batches of double-chocolate muffins using the same recipe and approach. In the first batch, use newly opened baking soda and baking powder, and in the second batch, use old leavening agents. Even before tasting, there is a noticeable difference in the muffins.

The use of fresh baking soda and baking powder resulted in a full muffin with a fluffy inside. The previous goods collapsed, resulting in a thick and dry muffin. These results support the use of fresh baking soda while preparing cakes, cupcakes, and muffins.

Cookies were also evaluated since they are less influenced by old leavening chemicals. The alterations were subtle, almost imperceptible. Do you see a change in the cookies shown above? The top three cookies were made using old baking powder. The cookies on the bottom were created using fresh baking powder. Both batches turned out excellent. As a result, although ultimate freshness is less critical for cookies, it is nevertheless recommended, particularly if the cookies have a cake-like texture.

How should baking soda be stored?

To begin, simply purchase the quantity of baking soda that you will need in 6 months. Don’t purchase five pounds if you can’t utilize them. When you open the baking soda box, write the date on it! This will get rid of any mystery boxes in your pantry.

Area your leavening chemicals in a cold, dry place now. Unless you’re using baking soda to reduce smells, keep them away from moisture and out of the fridge or freezer. (In such case, the baking soda should be replenished once a month, and it should not be used for baking since it has absorbed all of the fridge odors.)

Keep baking soda away from your stove and oven as well. Because heat and moisture rise from your range, don’t keep anything right above it. A spice cabinet or pantry is ideal since it is sheltered from heat, moisture, and sunlight.

After opening, store your baking soda in an airtight container to further safeguard it. This will prevent your cupboard from contamination caused by dampness or other scents. Remember to record the date it was opened.

How do I know if my baking soda is still good?

Baking soda reacts with acid. The bigger the response, the fresher the soda. So, in a dish, combine a couple tablespoons of vinegar and a teaspoon of baking soda. You’re fine to go if it quickly hisses and generates fizzy bubbles. If the response is just a slight fizz, do not use the baking soda for baking.

Should I throw away old baking soda?

Baking soda never “goes bad.” It just loses its effectiveness! So, even if the strength of baking soda has lessened, it may still be used in different ways. To get crisper skin on your next chicken or turkey, rub it with baking soda. It may be used to clean. It may be used as a deodorizer. And much more. There’s no need to get rid of outdated baking soda!

What happens if you use expired baking soda?

If you use outdated baking soda, your meal will not have the desired fluffy form and texture. It’ll resemble a deflated basketball. However, even if your baked products don’t rise, adding outdated baking soda should have no effect on the flavor.

Will expired baking soda hurt you?

No, outdated baking soda is not harmful to your health. Your baked items will not rise as much as if you used fresh baking soda. Too much baking soda does not taste good, so be sure you use the correct quantity for the recipe. It is hazardous in big quantities. However, it is uncommon to use so much baking soda in a recipe that it would be harmful.

Can expired baking soda be used for cleaning?

Yes, you may use expired baking soda to clean most home surfaces. It is very effective on stainless steel appliances and kitchenware. However, avoid using baking soda on metal or marble surfaces, since they might be damaged.

How do you store baking soda long-term?

Store baking soda in an airtight container for the greatest shelf life. If the existing container isn’t airtight, don’t keep the baking soda in it. The baking soda should not come into touch with water. It will get lumpy and lose its power otherwise.

Can you store baking soda in a plastic container?

Yes, as long as the container is well sealed, you may keep baking soda in a plastic container. Any contact to damp air or moisture accelerates the deterioration of baking soda.

Can you store baking soda in a mason jar?

Yes, baking soda may be stored in an airtight mason jar. If it is not exposed to damp, it will endure for around eight months. After that, you may use it to clean surfaces and household appliances such as your cooktop, microwave, and sink.

Can you use baking soda after it’s been in the fridge?

Yes, however it may not be as effective as freshly prepared baking soda. Baking soda also absorbs moisture and smells quite efficiently. So, if it sits in your fridge for too long, it may cause your baked items to taste strange. You may test it by putting some in a basin with vinegar and seeing whether it bubbles. If it does, the baking soda is activated and ready to be used in your recipes. If not, you could look for some new baking soda.

Does baking soda expire after 30 days?

Once opened, baking soda will last roughly eight months. Because of the damp air and food scents, it won’t survive as long in the fridge. There’s no need to keep baking soda in the fridge; instead, keep it in a cupboard.


Baking soda has an infinite shelf life, so you may store up on large quantities without fear of the product being harmful to use. To maintain its efficacy, it must be kept in a cold, dry environment. Perform a potency test if you are unsure about the freshness of a package that has been sitting in storage for some time.