This spicy brown mustard sauce is a quick, creamy condiment with the bold bite of brown mustard, a touch of sweetness, and a little heat. It takes about 10 minutes to make, needs no cooking, and works as a dip, sandwich spread, or finishing sauce for meat and vegetables.
Ingredients
- ½ cup mayonnaise
- 3 tablespoons spicy brown mustard
- 1 tablespoon honey
- 1 teaspoon apple cider vinegar
- ¼ teaspoon garlic powder
- ⅛ teaspoon cayenne pepper, plus more to taste
- ⅛ teaspoon fine salt, or to taste
- 1 to 2 teaspoons water, as needed to thin
Instructions
- Add the mayonnaise, spicy brown mustard, honey, vinegar, garlic powder, cayenne, and salt to a small bowl.
- Whisk until completely smooth, scraping the sides and bottom of the bowl so the ingredients are evenly combined.
- Taste the sauce. Add more cayenne for heat, honey for sweetness, or vinegar for a sharper tang, a little at a time.
- If you want a thinner, drizzleable sauce, whisk in water 1 teaspoon at a time. For a dip or sandwich spread, leave it thick.
- Cover and refrigerate for at least 15 minutes if time allows. This brief rest lets the flavors meld; stir once more before serving.
Tips
- Adjust the heat gradually. Spicy brown mustard varies in strength by brand, and cayenne adds heat quickly. Start with the stated amount, then add more in small pinches after tasting.
- Balance rather than mask. If the finished sauce tastes too sharp, add honey by the teaspoon. If it is too sweet or rich, add a few drops of vinegar or an extra teaspoon of mustard.
- Choose the right texture. Use the sauce as written for a thick spread or dip. Thin it with water for a drizzle; adding too much liquid at once can make it runny.
- Keep it chilled. Because this recipe contains mayonnaise, do not leave it at room temperature for more than 2 hours, or 1 hour when the temperature is above 90°F (32°C). Use clean utensils when serving.
Serving Suggestions
Spread the sauce inside burgers, roast beef or turkey sandwiches, wraps, and grilled cheese. Its creamy texture and mustard bite also make it a natural dip for pretzels, chicken tenders, fries, roasted potatoes, and crisp vegetables. For a simple dinner sauce, spoon a little beside grilled sausages, pork chops, or roasted chicken, or drizzle a thinner version over a grain bowl.
For a party platter, serve it cold in a small bowl with a spoon rather than letting the serving dish sit out for hours. If you are serving it with hot food, add the sauce at the table or spoon it onto the plate just before eating. The sauce is not designed to be heated in a pan; high heat can cause the mayonnaise to separate.
Variations
- Extra-hot: Increase the cayenne to ¼ teaspoon or add a few drops of your favorite hot sauce. Taste between additions so the mustard flavor stays present.
- Smoky: Add ¼ teaspoon smoked paprika. This pairs especially well with grilled meat and roasted vegetables.
- Herby: Stir in 1 tablespoon finely chopped fresh chives or parsley. Make this version close to serving time for the freshest flavor.
- Dairy-free or egg-free: Use a plant-based mayonnaise you enjoy. Check the label if you are cooking for someone with allergies, since prepared mustard and mayonnaise can contain or share facilities with common allergens.
- Without honey: Replace the honey with 2 teaspoons maple syrup, or leave it out for a sharper sauce. Taste and adjust the vinegar if needed.
Storage and Reheating
Transfer leftover sauce to a clean, airtight container and refrigerate promptly. It keeps well for up to 4 days when stored at 40°F (4°C) or colder; follow the use-by guidance on the mayonnaise and mustard labels, and discard it sooner if it has been mishandled or develops an off smell, appearance, or texture. Do not freeze it: mayonnaise-based sauces can separate and turn watery after thawing.
This sauce is meant to be served cold or cool, so reheating is unnecessary. Stir it before serving if a little liquid has separated. For safe serving, keep the main container refrigerated and put out only the amount you expect to use. Discard sauce that has been left out longer than 2 hours, or longer than 1 hour in temperatures above 90°F (32°C); do not return it to the container to save for later.
Frequently Asked Questions
Is spicy brown mustard the same as Dijon?
No. Spicy brown mustard is typically made with coarser brown mustard seeds and has a robust, pungent flavor. Dijon is generally smoother and can taste sharper or wine-like. Dijon can work here, but the finished sauce will be milder in texture and different in flavor.
Can I make the sauce without mayonnaise?
Yes. For a lighter, tangier version, use plain Greek yogurt in place of the mayonnaise and start with 1 teaspoon honey, adjusting to taste. The result will be less rich and more tart, and it should still be kept refrigerated. A plant-based mayonnaise also works as a direct substitute.
How can I make it less spicy?
Leave out the cayenne and use a mild mayonnaise. If the mustard itself is too strong, add mayonnaise a tablespoon at a time, then balance the flavor with a little honey. You can also replace part of the spicy brown mustard with Dijon or yellow mustard, though the flavor will be less bold.
Can I make it ahead?
Yes. Make it up to 4 days ahead and store it in a covered container in the refrigerator. The flavor often improves after a short rest. Stir before serving and avoid leaving the full batch out while people dip into it.
Why is my sauce too thick or too thin?
Mustard and mayonnaise brands vary, and measuring by volume can make small texture differences. If it is too thick, whisk in water 1 teaspoon at a time. If it is too thin, stir in mayonnaise or mustard a little at a time, then chill it briefly; do not try to thicken it by heating.