
This Sweet and Spicy Mardi Gras Mustard is made for those moments when you want a bold dipping sauce that livens up any snack or sandwich. It is creamy tangy with a little lick of heat and the right amount of sweetness. Whether you are getting ready for Mardi Gras or just need that jolt on the side of your plate this quick sauce will wake up ordinary fries soft pretzels or even roasted veggies.
I whipped this up one game day and my friends devoured it with fried pickles chicken fingers and even chips. Now I keep a small jar on hand just for impromptu dipping.
Ingredients
- Mayonnaise: Two tablespoons give the sauce its smooth creamy base Choose a mayo with a clean label for the best texture and flavor
- Whole grain mustard: One tablespoon adds a popping texture and earthy tang Look for fresh jars where the grains are still plump and moist
- Spicy brown mustard: One tablespoon layers in robust spice and acidity Avoid dried out mustard and pick a freshly opened jar for kick
- Deli style horseradish: One tablespoon brings a pungent zip and heat Choose prepared horseradish for less bite or freshly grated if you love sharpness
- Dark brown sugar: Two teaspoons pack in a molasses richness and deep sweetness Always scoop from a tightly closed container to keep moisture
- Cajun seasoning: One quarter teaspoon infuses Louisiana flair and gentle heat Select a blend without too much salt for best balance
Step-by-Step Instructions
- Combine the Base:
- Add mayonnaise whole grain mustard spicy brown mustard horseradish dark brown sugar and cajun seasoning to a small mixing bowl Use a flexible spatula to ensure you capture every bit from the spoon
- Mix Thoroughly:
- With your spatula or a mini whisk mix everything until the sauce is fully glossy and there are no streaks of mayo or brown sugar Scrape down the sides and keep stirring for a uniform flavor
- Rest the Flavor:
- Cover the bowl and refrigerate for at least thirty minutes The chill time allows the flavors to meld and the sweetness and heat to balance more evenly
- Taste and Adjust:
- After chilling give the sauce a stir and taste it Depending on your cajun seasoning you might add a pinch more for stronger heat If you prefer sweeter add a dot more brown sugar Add more horseradish in tiny amounts for extra pungency
- Serve:
- Spoon into a small dish for dipping or dollop onto sandwiches burgers or wraps Reseal and refrigerate any leftovers for later

Horseradish is my secret favorite here That little sneaky heat keeps everyone guessing I still remember the first time I served this at Mardi Gras and my uncle insisted on getting the recipe to use at his barbecue
Storage Tips
This mustard sauce stores best in a small glass jar or sealed container to keep it fresh and tangy Save space by making a small batch but you can double the amounts for parties. Always use a clean spoon when serving to avoid contamination and keep in the fridge for up to five days. If the sauce separates just give it a quick stir.
Ingredient Substitutions
If you do not have spicy brown mustard try Dijon for a milder tang. Apple cider vinegar can boost tartness if you lack horseradish. For a vegan version use a plant-based mayonnaise. You can also use light brown sugar if dark brown is not available but the flavor will be slightly less deep.
Serving Suggestions
This sauce shines with anything fried like fish sticks or chicken tenders. It doubles as a tasty sandwich spread on turkey or roast beef sliders. Spoon over grilled sausages serve as a dip for air fried vegetables or swirl into potato salad for a Mardi Gras twist.
Cultural Context
Mardi Gras flavors are famous for their spicy tangy notes. This sauce draws on classic New Orleans ingredients like mustard and Cajun spices but the horseradish and mayo make it unique. Growing up I was always amazed at how something this simple could capture the spirit of a holiday and become an everyday favorite.

This easy sauce is guaranteed to spice up your snacks and party plates. Just five minutes and a handful of ingredients transform into Mardi Gras magic.
Recipe Q&A
- → Can I use different types of mustard?
Yes, you can swap whole grain or spicy brown mustard for Dijon or yellow mustard depending on your preferred flavor and texture.
- → How spicy is this Mardi Gras mustard?
Spiciness depends on your horseradish and Cajun seasoning. Start mild and increase the heat as desired by tasting and adjusting.
- → How long should the mustard rest before serving?
Chilling for at least 30 minutes helps develop flavors. Longer refrigeration can further improve taste and texture.
- → What can I serve with this mustard?
This mustard pairs well with pretzels, sandwiches, sausages, charcuterie boards, or as a zesty dip for vegetables.
- → How long does homemade mustard keep in the fridge?
Stored in an airtight container, this mustard blend should keep for up to one week refrigerated.