Mustard Powder Substitutes, Ranked by the Job Dry Mustard Is Doing

Out of mustard powder? Prepared mustard, Dijon especially, is the easiest swap for tang and body; ground mustard seed, wasabi or horseradish powder for heat; and turmeric when you mostly want the color. Mustard powder (ground or dry mustard) is mustard seed milled to a flour, and dry, it has little bite. The heat only shows up when water reaches it: the enzyme myrosinase acts on a compound in the seed called sinigrin to form allyl isothiocyanate, the volatile compound behind mustard’s kick.¹ So a good substitute either brings that same chemistry or covers whatever else the powder was doing in your recipe: tang and body in a sauce, yellow color in a cheese dish, or sharp heat in a rub or condiment.

Quick answer

How the ratios on this page are labeled

Every ratio carries one of four labels.

• Computed: based on a measurable physical relationship, with the source named.
• Attributed: a named source publishes this ratio. We quote it as theirs.
• Disputed: named sources give different answers to the same swap. We show each one and do not average them.
• Method: we found no published ratio. We give a direction and a cautious starting point, and say so.

The published figures below are kitchen equivalents from extension services and a spice company. None of them measures pungency, and we found no study comparing the heat of mustard powder with any of its substitutes.

If mustard powder is adding tang and body

In dressings, cheese sauces, glazes and deviled eggs, the powder seasons and helps hold the sauce together. Katzer notes that mustard contains emulsifiers that help stabilize emulsified sauces.² Prepared mustard does both jobs.

1. Dijon mustard

McCormick calls Dijon the best substitute for ground mustard because the flavors are similar.³ By the rules for Dijon, it can be made only from black and/or brown mustard seeds,⁴ the more pungent kinds. Britannica describes white mustard seed as less intensely flavored than brown.⁵

Ratio (Attributed): Three sources agree. NDSU Extension and NMSU Extension both give 1 tablespoon of prepared mustard for 1 teaspoon of dry mustard,⁶⁷ and McCormick gives the same figure for Dijon.³

2. Yellow (American) prepared mustard

Ratio (Attributed): The extension figure above, 1 tablespoon per teaspoon, applies to prepared mustard in general.⁶⁷ Yellow mustard is the mildest choice and adds the most yellow color. Some brands get that bright yellow from turmeric, Katzer notes.²

Liquid: A tablespoon of prepared mustard adds liquid the powder didn’t. We found no published adjustment. In a tight sauce or dressing, hold back a little of the recipe’s vinegar or lemon juice, then taste and add it back if needed.

If mustard powder is bringing sharp heat

In a dry rub, a marinade or a homemade hot mustard, the heat is the point. Mustard seed, horseradish and wasabi all form pungent isothiocyanates when their cells are broken.⁸

1. Mustard seeds, ground

Same ingredient, different form. Grind the seeds in a spice grinder, or crush them in a mortar, as fine as you can. McCormick says mustard seeds tend to be more potent than ground mustard.³

Ratio (Disputed): The two published figures answer the question differently.

McCormick’s figure tells you how much powder a teaspoon of seeds makes, not how hot it’ll be. Since McCormick also says the seeds tend to be more potent,³ start with NDSU’s 1/2 teaspoon. Taste once the mustard has sat in liquid for a few minutes, and add more if you want it.

Which seeds. Ready-made mustard powder is usually yellow seed; Popular Science says you’ll have a hard time finding any other kind.¹ Yellow seed is the best match. Brown or black seed will be hotter: Britannica rates white mustard less intense than brown,⁵ and Katzer rates black slightly more pungent than brown.¹⁰

Don’t toast them. Fried or toasted mustard seeds lose their pungency and turn nutty and smoky, Katzer notes.¹⁰ That’s great for Indian tempering, but not for standing in for raw powder.

2. Wasabi powder

Most wasabi powder isn’t wasabi. S&B’s lists horseradish, mustard, corn starch, vitamin C, artificial flavor and artificial colors,¹¹ and Chowhound reports that the vast majority of commercial wasabi is made from European horseradish.¹² So a typical wasabi powder is mustard and horseradish powder, dyed green.

Ratio: We didn’t find a published ratio. Mix it with cool water (S&B’s label uses cold water)¹¹ and start with half as much as the mustard powder called for, then taste. It’ll turn a cream sauce or dressing faintly green.

3. Horseradish powder

Horseradish is in the same plant family as mustard, Brassicaceae.¹³ Britannica credits allyl isothiocyanate with its distinctive flavor and notes related compounds in mustard.⁸ A German spice merchant says ground horseradish gets pronounced pungency as soon as it meets water, and can taste quite bitter.¹⁴

Ratio: We didn’t find a published ratio. Start with half as much horseradish powder as mustard powder, mixed with a little cool water, and taste.

Only use grated fresh horseradish if you’ll serve it soon. America’s Test Kitchen notes that grated horseradish gets milder the longer it sits, and that vinegar preserves its heat.¹⁵

Keep the heat out of the hot pan

Heat works against every substitute in this section. Popular Science reports that water that’s too hot shuts down myrosinase completely, and that vinegar inhibits it too.¹ Katzer notes that heating quickly destroys the isothiocyanates once they’ve formed,¹⁰ and in a 2024 study of horseradish sauce, heat treatment inactivated the enzyme and caused an undesired loss of pungency.¹⁶ In a cooked dish, mix the substitute with a little cool water first and stir it in near the end. You’ll sometimes read that horseradish only works in cold dishes, but that overstates it. Just add it at the end, off the heat.

If mustard powder is mostly there for color

Turmeric

Ratio (Attributed): McCormick suggests turmeric as a second option. It says turmeric has a similar color and taste to dry mustard but won’t be as spicy, and that you can use the same measurement the recipe gives for ground mustard.³

Curcumin gives turmeric its yellow color.¹⁷ Turmeric has none of the enzyme chemistry above, so expect color and an earthy note but no mustard heat. Use it where the powder was mostly there to make macaroni and cheese or deviled eggs look right, and add a pinch of another substitute if you want some bite too.

What isn’t known

• No study compares the pungency of mustard powder with prepared mustard, ground seed, horseradish or wasabi. Every ratio here is a rule of thumb.
• You’ll often hear that horseradish and wasabi powders are hotter than mustard powder. We found no measurement either way.
• We found no tested figure for how much liquid to hold back when swapping prepared mustard for the powder.

Related

• Mustard powder, mustard powder uses, mustard powder vs. mustard seed and mustard powder vs. prepared mustard
• The seeds: yellow mustard seeds, brown mustard seeds, black mustard seeds, yellow vs. black mustard seeds and mustard seed uses
• Horseradish, horseradish powder, wasabi, wasabi vs. horseradish and wasabi powder vs. paste
• Turmeric and turmeric substitutes

Footnotes

1. Sandra Gutierrez G., When the mustard shortage hits, make your own, Popular Science, 2022. popsci.com · Publication ↩ ↩² ↩³

2. Gernot Katzer, White Mustard, Gernot Katzer’s Spice Pages. gernot-katzers-spice-pages.com · Reference work ↩ ↩²

3. About Ground Mustard: Uses, Pairings and Substitutes, McCormick, 2025. mccormick.com · Merchant ↩ ↩² ↩³ ↩⁴ ↩⁵

4. William Sertl, Avez-Vous du Vrai Poupon?, Saveur, 2007. saveur.com · Publication ↩

5. White mustard, Encyclopaedia Britannica. britannica.com · Reference work ↩ ↩²

6. Julie Garden-Robinson, Ingredient Substitutions (FN198), NDSU Extension, 2018. ksre.ksu.edu · Reference work ↩ ↩² ↩³

7. In a Pinch Ingredient Substitution (E-131), NMSU Cooperative Extension, 2016. pubs.nmsu.edu · Reference work ↩ ↩²

8. Isothiocyanate, Encyclopaedia Britannica. britannica.com · Reference work ↩ ↩²

9. How to Grind Your Own Spices, Plus Spice Conversions, McCormick, 2025. mccormick.com · Merchant ↩

10. Gernot Katzer, Mustard, Gernot Katzer’s Spice Pages. gernot-katzers-spice-pages.com · Reference work ↩ ↩² ↩³

11. S&B Wasabi Powder, label ingredients and directions as listed by Gourmet Food World. gourmetfoodworld.com · Merchant ↩ ↩²

12. Elias Nash, Why Genuine Wasabi Is So Expensive In The US, Chowhound, 2023. chowhound.com · Publication ↩

13. Horseradish, Encyclopaedia Britannica. britannica.com · Reference work ↩

14. Horseradish ground, Gewürzshop Mayer. gewuerzshop-mayer.de · Merchant ↩

15. Keeping the Kick in Fresh Horseradish, America’s Test Kitchen. americastestkitchen.com · Publication ↩

16. Bianchi et al., Substitution of additives in horseradish sauce, Applied Food Research, 2024. doaj.org · Peer-reviewed ↩

17. Turmeric: Usefulness and Safety, National Center for Complementary and Integrative Health. nccih.nih.gov · Regulator ↩