What Is Mustard Flour? (How It’s Made + More)

Mustard has made rounds around the world, making mustard a staple condiment in many households.

There are many types of mustard, and one mustard you may be curious about is mustard flour. I did some research, and here are some things I discovered!

What Is Mustard Flour?

Mustard flour, which is also called dry mustard or mustard powder, is made from mustard plant seeds. Mustard flour can be made from yellow, brown, or black mustard seeds. Mustard flour’s taste and pungency depend on the variety of the seed used as the different mustard seeds have varying strengths of heat.

What are the uses of mustard flour? Is mustard flour just a spice? Keep on reading to find out!

How Is Mustard Flour Made?

Mustard flour is made by pulverizing or grinding the mustard seeds into a fine powder. And mustard flour becomes a spreadable condiment by blending the ground powder with a liquid to create a paste.

Different kinds of mustards seeds may be blended to achieve different heat levels and tastes, but the pungency is only released once the mustard flour is mixed with a liquid.

Is Mustard Flour The Same As Mustard Powder?

Mustard flour and mustard powder are the same and the names are interchangeable.

Some people also refer to mustard flour and mustard powder as dry mustard since they are all powdered mustard seeds.

Other names of mustard flour include ground mustard, mustard spice, and mustard seed powder.

What Is An Alternative To Mustard Flour?

What Is An Alternative To Mustard Flour?

Any type of prepared mustard can be a substitute for mustard flour since mustard flour is the core ingredient of prepared mustard.

You can choose to replace mustard flour with any kind of prepared mustard of your choice depending on how you like your mustard.

To keep things simple, you can opt to replace mustard flour with whole mustard seeds.

However, the spice level may not be the same as mustard flour because whole mustard seeds tend to be milder than mustard flour.

Turmeric powder is also a great alternative because turmeric has a peppery and bitter flavor, which resembles the pungency of mustard flour.

Additionally, wasabi powder and horseradish powder are also common replacements because they both offer nasal heat, which is similar to the heat of mustard flour when mixed with liquid.

How Is Mustard Flour Used?

Since mustard flour is powdered, mustard flour can be added to almost anything like sauces, vinaigrettes, spreads, and dressings.

Barbecue rubs are also usually incorporated with mustard flour if you need something to cut the richness and flavor of the meat.

Additionally, mustard flour is great as a pickling spice because mustard flour offers pungency and acidity, making mustard flour a great pickling ingredient.

Moreover, the most common use of mustard flour is to make prepared mustard since mustard flour is ground mustard seeds.

Is Mustard Flour Gluten-Free?

Typically, mustard flour is gluten-free because mustard flour is pulverized mustard seeds without anything added to the mustard flour.

Cross-contamination may occur if it is not pure mustard flour, so you have to check if the manufacturer states if the mustard flour is gluten-free.

If the product is pulverized in a facility where other food products are made, then the mustard flour may be contaminated with gluten.

To ensure that your mustard flour is gluten-free, you can buy mustard seeds and ground them yourself to ensure that no gluten contaminates your mustard flour.

Additionally, always check the label when buying pre-made mustard powder to see if it is indicated that the mustard flour is gluten-free.

If you want to learn what yellow mustard is, what mustard seeds are, and what dry mustard is, read our related articles.


Mustard flour is ground mustard seeds, and mustard flour is the core ingredient of most prepared mustards.

You can use mustard flour in its powdered form or mix the mustard flour with a liquid to make spreadable mustard.

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