How to Make Onion Salt

How to Make Onion Salt. Photo © Erin Huffstetler
  • Prep Time
    2 min
  • Cook Time
    0 min
  • Total Time
    2 min
  • Yield

Need onion salt for a recipe? Here's how to make your own onion salt -- or onion salt substitute -- in two minutes or less, using a couple basic ingredients from your pantry. Make as much or as little as you need.


  • Onion powder
  • Salt


Just mix three parts salt and one part onion powder to make your own onion salt. Store it in an air-tight container until you need it. This recipe does not contain any anti-caking agents, so you may find that you need to stir your onion salt up before each use.

How to Make Onion Salt from Onion Flakes

No onion powder? If you have a bottle of onion flakes in your pantry, you can also use it to make onion salt.

Just pulse some onion flakes in a coffee/spice grinder or a food processor, until they're finely ground. Then, use the onion powder that you just created to make a batch of onion salt. Easy!

Tip: Use a dedicated grinder to grind your spices. If you use the same one to grind coffee beans and spices, your coffee may start to taste like things it shouldn't.

How to Make Onion Salt From Scratch

If you grow your own onions, or have a lot of onions on hands, consider making your own onion salt from scratch. It's a fun and easy way to preserve onions. Just slice some onions thinly, and use a food dehydrator to dry them out. Then, use a grinder to turn your dried onions into onion powder, and proceed with the onion salt recipe as usual.

For more detailed instructions:

How to Substitute Fresh Onions for Onion Salt

If you have fresh onions, and you don't mind having their texture in your dish, finely chop half a cup of onions, and use them in place of one teaspoon of onion salt.

This substitution lacks salt, so consider adding  3/4 teaspoon of regular salt for each teaspoon of onion salt called for. Of course, if you're watching your salt intake, you may want to leave it out altogether.

Reasons to Make Your Own Onion Salt

When you make your own onion salt, you get to control the amount and type of salt that goes into it.

Just tweak the ratio to include more onion and less salt, and you'll have a lower-sodium product than you can buy at the store. Use kosher salt, sea salt, iodized or non-iodized salt. Whatever your preference, your onion salt is sure to turn out great.

Many commercially produced onion salts contain anti-caking ingredients, such as sodium aluminate. If you're trying to eliminate your exposure to these, making your own onion salt is a good way to go.

Switch to homemade onion salt, and you may find yourself using it more because it tastes so much better. Who knows, you may even want to use it in place of your table salt. That would certainly be an easy way to cut your sodium intake by 25%.

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