In our last post, we learned how to make onion powder — whether from onion skins for a zero-waste boost, or from roasted onions for deep, savory sweetness.
Now, we’re taking it one step further and turning that powder into onion salt — a pantry essential that’s perfect for seasoning everything from roasted veggies to grilled meats.
Making onion salt at home is not only quick and easy, but it also gives you control over the flavor strength, salt type, and texture.
The Basic Onion Salt
If you’ve already got homemade onion powder (or even a good-quality store-bought version), you’re halfway there.
You’ll need:
- 1 part onion powder
- 3 parts fine sea salt or kosher salt (non-iodized)
How to make it:
- In a small bowl, combine the onion powder and salt.
- Mix gently until evenly distributed.
- Store in an airtight jar in a cool, dry place.
Tip: For stronger onion flavor, use a 1:2 ratio instead of 1:3. For a lighter flavor, go 1:4.
Artisan Roasted Onion Salt
This is the gourmet version — perfect for gifts or for treating yourself to something special.
We start with roasted onion powder (see our last post for instructions) to create a seasoning with sweet depth and beautiful aroma.
You’ll need:
- ½ cup roasted onion powder
- 1½ cups flaky sea salt (like Maldon or Celtic)
- Optional: pinch of smoked paprika or dried parsley for color
How to make it:
- In a bowl, gently mix roasted onion powder with the flaky sea salt.
- Tip: Stir, don’t grind — you want to keep those lovely salt flakes intact for a more rustic look.
- Add paprika for a warm hue or parsley for flecks of green.
- Store in an airtight glass jar away from sunlight.
Ways to Use Onion Salt:
- Sprinkle over roasted potatoes or sweet potatoes.
- Season burgers, chicken, or tofu before grilling.
- Add to salad dressings for instant savory depth.
- Sprinkle on avocado toast or scrambled eggs.
Storage & Shelf Life
- Keep in a sealed jar away from moisture.
- Best flavor within 3–4 months, but safe to use for up to a year if stored properly.
- To prevent clumping, you can tuck a cheesecloth pouch of uncooked rice or a small food-safe silica packet into the jar.
By making your own onion salt, you’re skipping the additives and getting a fresher, more vibrant seasoning than anything in a store-bought shaker.
Whether you keep it simple or go all out with the roasted version, your cooking will taste brighter, richer, and more “from scratch.”