Why You Should Add Baking Soda to Onions When Cooking

Baking soda in onions? It might sound odd, but it’s a trick worth knowing. This simple addition can speed up your cooking and add rich, browned flavors in no time.

As someone who loves a good time-saving hack in the kitchen, learning how baking soda affects onions was a game-changer. Let’s dive into the science and practical uses of this technique.

The Science Behind Baking Soda and Onions

PH levels have a huge impact on the Maillard reaction, the chemical process that gets foods all nice and browned when they’re heated. Onions, with a pH of around 5, are on the acidic side. But when you add an alkaline ingredient like baking soda, it bumps up the pH level, making onions brown faster. That higher pH also softens onions by breaking down the pectins in their cell walls, meaning they cook quicker and release flavor and color faster.

How to Use Baking Soda for Browning

This method is all about efficiency. By speeding up the browning process, you can save valuable cooking time. The technique works best with dishes that don’t need the onions to hold their shape, like sauces or stews.

Avoiding Mushy Onions

For recipes like channa masala or butter chicken, where the onions are meant to meld into the sauce, this technique is perfect. But for dishes where you need that delightful, crunchy onion texture, forget it. Baking soda just makes them mushy.

Flavor Considerations

Baking soda adds speed to the browning process without losing flavors, as long as your dish can handle the texture and potential taste shift. Balance is key, ensuring that the other ingredients complement and mask any unwanted flavors.

Practical Applications in Cooking

It’s also useful for large-batch cooking. Say you’re prepping a huge pot of chili for a party; browning a ton of onions this way can save you a lot of effort and time.

Limitations of the Technique

This method isn’t without its limitations. If you overdo the baking soda, you could end up with an unpleasant, soapy taste. Plus, the onion’s texture will be decidedly mushy, which isn’t always what you want.

Final Thoughts

Adding baking soda speeds up the browning process, but it’s not for every dish. Choose wisely based on whether you need the onions to keep their shape or not.


Adding baking soda to onions can drastically cut down your cooking time and enhance flavors. While it’s perfect for certain recipes, it’s not suitable for all. Use it wisely.

This method could be a real game-changer for many home cooks, saving time and adding depth to your dishes. Just remember the key points, and you’ll be golden.

Source: Seriouseats

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