Sauces & Condiments
This Arby's horseradish sauce recipe delivers that signature tangy-spicy kick you crave with every bite. The secret lies in balancing sharp horseradish with sweet and acidic elements—just like the original—while keeping it smooth and dip-ready.
I've perfected a version that's perfect for fries, sandwiches, or even as a marinade, using simple pantry staples and a foolproof technique.
The foundation starts with fresh horseradish root, grated fine to avoid bitterness, then blended with vinegar to mellow its intensity. A touch of sugar and mustard powder creates that signature sweet-spicy balance, while a splash of lemon juice brightens the flavor.
What sets this apart is the emulsification process—using mayonnaise or Greek yogurt to create a creamy, clingy texture that stays consistent, even after refrigeration.
By the time you taste it, you'll recognize that familiar Arby's tang without the artificial aftertaste. The sauce maintains its sharpness for days in the fridge, making it ideal for meal prep.
Whether you're dipping fries, slathering burgers, or using it as a marinade, this recipe delivers restaurant-quality results with just five ingredients and 10 minutes of active time.
For those who prefer a milder version, reduce the horseradish by half, or double it for extra heat. Store in an airtight container for up to two weeks—though it rarely lasts that long. Here's everything you need to make it right at home.
Ingredients for arby's horseradish sauce
Five ingredients and a sharp horseradish root create that iconic Arby's tang you can't resist.
| Ingredient | Amount | Notes |
|---|---|---|
| Fresh Horseradish Root 🌿 | ½ cup | Grated fine, not pre-packaged |
| White Vinegar 💧 | ¼ cup | Distilled preferred for clarity |
| Granulated Sugar 🍚 | 2 tbsp | White or brown for depth |
| Dry Mustard Powder 🌶️ | 1 tbsp | Not prepared mustard |
| Lemon Juice 🍋 | 1 tbsp | Freshly squeezed |
| Mayonnaise 🥫 | ½ cup | Duck or avocado oil preferred |
| Kosher Salt 🧂 | ½ tsp | Diamond Crystal preferred |
| Black Pepper 🌶️ | ¼ tsp | Freshly ground for heat |
The horseradish root is non-negotiable for authentic flavor—grab a fresh root from the produce section, not the pre-grated jar. It loses potency fast once grated, so use it immediately. Trader Joe's and Whole Foods carry the best quality, but any grocery store's produce department works. For the vinegar, stick with white—apple cider vinegar adds unwanted sweetness. The sugar is all about balancing the heat, so don't skip it even if you prefer extra spice. I always double-check the mustard powder label to ensure it's pure—no fillers or additives.
No fresh horseradish? Pre-grated works in a pinch, but it's less sharp and often bitter. Substitute with wasabi powder at half the amount—it's closer in flavor but still not identical. Running low on vinegar? Lemon juice at the same quantity brightens the sauce but adds extra acidity. For a milder version, reduce the horseradish to 0.25 cup and add 1 extra tbsp sugar. The mayonnaise is key for that creamy texture—duck or avocado oil mayo gives the best flavor, but regular works fine. If you're avoiding mayo, Greek yogurt at the same quantity works beautifully for a tangier texture.
This sauce keeps its sharpness for two weeks in an airtight container in the fridge. I portion mine into small jars so it's ready for dipping or slathering. For extra heat, add 1/4 tsp cayenne pepper when blending. The sauce thickens as it chills, so give it a quick stir before using. Freezes beautifully for up to 3 months—just thaw in the fridge overnight.
Why You'll Love This Recipe
- Five-Ingredient Magic: I swear, this sauce comes together with fewer steps than my morning coffee. Grate that horseradish root, toss it in a jar with vinegar and sugar, and let it sit while you make dinner—no fancy techniques, just raw flavor.
- Spicy-Sweet Balance: That first bite? Pure contrast—bright horseradish heat cuts through the tangy vinegar, while the sugar smooths it into something addictive. Honestly, it’s the kind of sauce that makes you reach for seconds without thinking.
- Game for Any Meal: Slather it on burgers, mix it into deviled eggs, or drizzle it over roasted potatoes. I’ve even used it as a marinade for chicken—works everywhere, and it’s always a crowd-pleaser.
- Lasts All Week: Make a big batch, and it’ll keep in the fridge for days. No waste, no stress—just pull out what you need whenever the craving hits. Between us, I’ve had this sauce last me through three grocery store trips.
Step-by-step instructions for Arby's horseradish sauce
Here's how to recreate that signature tangy-spicy kick at home with precise technique.
Grate the Fresh Horseradish Root
Use a fine grater or food processor to grate 0.5 cup fresh horseradish root. I like to work in batches, grating about ¼ cup at a time, to control the texture. The key here is to keep it fine—no chunky bits should remain. As you grate, you'll notice the pungent aroma intensify; this is normal and essential for authentic flavor.
Transfer the grated horseradish to a medium bowl immediately. Don't let it sit exposed to air for long—it releases volatile oils that can make the sauce too sharp. Cover the bowl loosely with plastic wrap while you prepare the remaining ingredients. This step ensures you capture all the fresh, fiery character of the root.
Combine Wet Ingredients
In the same bowl with the grated horseradish, add 0.25 cup white vinegar, 1 tablespoon lemon juice, and 2 tablespoons granulated sugar. Stir vigorously with a silicone spatula until everything is fully incorporated. The vinegar helps mellow the horseradish's heat while preserving its signature kick. The sugar balances the acidity, creating that perfect sweet-spicy contrast.
Let this mixture sit for 5 minutes while you prepare the dry ingredients. This brief resting period allows the flavors to begin melding. You'll notice the mixture darken slightly and develop a deeper aroma—this is your cue that the chemical reactions are working as they should.
Incorporate Dry Components
Add 1 tablespoon dry mustard powder, 0.5 teaspoon kosher salt, and 0.25 teaspoon freshly ground black pepper to the bowl. Whisk everything together until the dry ingredients are completely dissolved and no lumps remain. The mustard powder adds depth while the salt and pepper enhance the overall flavor profile.
At this stage, the mixture should be thick but still pourable. If it's too stiff, add 1 teaspoon water at a time until it reaches a smooth, spreadable consistency. The texture should be similar to a thick mayonnaise—this ensures it clings beautifully to fries or sandwiches without dripping.
Fold in the Mayonnaise
Gently fold in 0.5 cup mayonnaise using a spatula or whisk. Work slowly to maintain an even texture without incorporating air bubbles. The mayonnaise acts as the creamy base that binds all the flavors together. I like to fold in thirds—first mix half the mayonnaise, then the rest—to ensure perfect integration.
Taste the sauce at this point. It should have a bright, tangy heat with balanced sweetness. If it needs more kick, add another ½ teaspoon grated horseradish. For extra tang, add ½ teaspoon vinegar. Adjust the seasoning gradually—you can always add more, but you can't take it out once it's mixed in.
Rest and Serve
Cover the bowl and refrigerate the sauce for at least 1 hour before serving. This resting period allows all the flavors to fully meld and develop. The sauce will thicken slightly as it chills, becoming even more stable and clingy. I find that serving it cold enhances the crisp contrast with warm fries or sandwiches.
When ready to serve, give the sauce one final stir to ensure even consistency. The finished product should be vibrant, with a creamy texture that carries that signature horseradish heat. Serve immediately alongside your favorite fried foods or sandwiches for that classic Arby's experience right at home.
Pro Tips For Making Arby'S Horseradish Sauce
- GRATE IT SMALL: Fresh horseradish loses heat fast, so grate it just before mixing—no more than 2 tablespoons at a time. I used to prep a big batch ahead, and by the time I used it, the kick was half as strong. Do this right before adding vinegar and sugar, or keep a backup piece in the fridge for a quick boost.
- DILUTE THE VINEGAR FIRST: Mix the white vinegar and sugar separately until dissolved before adding horseradish. I learned this after clumping disasters—undissolved sugar turns the sauce grainy, and nobody wants to chomp on grit. Stir the vinegar-sugar mix until it’s clear, then fold in the rest.
- LEMON JUICE MATTERS: Use fresh lemon juice, not bottled—it’s the only way to balance the vinegar’s sharpness without turning the sauce flat. My first attempt with bottled juice tasted like vinegar punch. Even a splash of fresh lemon juice makes the horseradish’s bite sing instead of sour.
- WHISK THE MUSTARD: Wet the dry mustard powder with a tiny splash of vinegar before adding it to the mix. This prevents clumps and ensures it dissolves smoothly—no one likes mustard grit in their sauce. I was skeptical, but now I swear by it for a silky texture every time.
Regional styles of this recipe
Midwest Classic Style
In the Midwest, this sauce becomes a sandwich staple, especially with roast beef or chicken fingers. The key here is to double the mustard powder to 2 tablespoons and add ½ teaspoon smoked paprika for a deeper, slightly smoky flavor that pairs perfectly with hearty Midwestern fare.
Serve it warm by gently heating it in a small saucepan over low heat for 2-3 minutes—just until it reaches 120°F. This version is thicker, almost like a glaze, making it ideal for slathering on sandwiches or dipping crispy onion rings. 🌶️
Southern Heat Twist
Down South, they crank up the heat by adding ½ teaspoon cayenne pepper and 1 teaspoon hot sauce (like Crystal or Tabasco). The sauce becomes a spicy dipping sauce for fried green tomatoes or shrimp po' boys.
To balance the heat, reduce the sugar to 1 tablespoon and add ½ teaspoon garlic powder for a bold, zesty kick. This version is thinner, almost like a marinade, so it clings beautifully to fried foods.
I love serving it with cornbread on the side to soak up any extra sauce. 🔥
Pacific Northwest Mellow
In the Pacific Northwest, the focus is on milder, fresher flavors. Reduce the horseradish to 0.25 cup and add 1 tablespoon honey instead of sugar to balance the tang.
A splash of 1 teaspoon apple cider vinegar replaces white vinegar, adding a subtle fruitiness that complements local seafood like salmon or halibut. This version is lighter and brighter, perfect for dipping fish and chips or drizzling over grilled vegetables.
The sauce keeps well for up to 3 weeks in the fridge, making it great for meal prep. 🌿
Texas BBQ Fusion
Texans love to use this sauce as a BBQ marinade or dipping sauce for brisket. Mix in 1 tablespoon chipotle powder and ½ teaspoon ground cumin for a smoky, spicy depth.
The sauce becomes thicker, almost like a dry rub, so add 1 extra tablespoon of mayonnaise to maintain a spreadable consistency. Brush it on ribs before grilling or serve it as a side with smoked brisket.
The heat level is medium-high, so adjust the horseradish to taste—start with 0.3 cup and add more if needed. 🌶️
East Coast Creamy Dip
On the East Coast, this sauce is all about creamy dips for seafood or chips. Replace the mayonnaise with ½ cup Greek yogurt for a tangier, lighter texture.
Add ½ teaspoon dried dill and ¼ teaspoon onion powder for a fresh, herby note that pairs perfectly with lobster rolls or goldfish crackers. This version is milder but still packs a punch—ideal for those who love bold flavors without overwhelming heat.
Store it in an airtight container for up to 2 weeks, though it rarely lasts that long! 🥗
Nutrition facts
Frequently asked questions about Arby's horseradish sauce
Can I substitute fresh horseradish with prepared horseradish?
Prepared horseradish works in a pinch, but fresh root gives the best flavor. If using prepared, reduce the amount to ¼ cup (half the recipe) since it's already more concentrated. For a closer match, add ½ teaspoon extra vinegar to compensate for the lack of freshness. The texture will be slightly less smooth but still delicious!
Why does my sauce turn bitter or too spicy?
Over-grating or letting horseradish sit exposed to air releases its volatile oils, making it bitter. Always grate fresh and use immediately. For extra heat, add horseradish gradually—start with ¼ cup and adjust to taste. The sugar and vinegar balance the sharpness, so don't skip them even if you love spice!
Can I make this sauce without mayonnaise?
Yes! Replace the mayonnaise with ½ cup Greek yogurt for a tangier, lighter texture. For a thinner consistency, add 1-2 tablespoons water while blending. The yogurt version works perfectly for dipping fries or as a marinade, though it may separate slightly over time—just stir before using.
How do I adjust the heat level?
For milder heat, reduce horseradish to ¼ cup and add 1 extra tablespoon sugar. For extra kick, increase horseradish to ⅔ cup or add ¼ teaspoon cayenne pepper. Always taste as you go—you can't remove heat once it's mixed in, but you can balance it with more sugar or vinegar.
Can I freeze this sauce for later?
Yes! Portion into airtight containers and freeze for up to 3 months. Thaw overnight in the fridge and stir well before using. The texture may separate slightly, but a quick whisk restores it. Avoid freezing if you prefer a perfectly smooth consistency—it works best fresh or refrigerated.