Easy Homemade Sauce Samouraï Recipe, Spicy Mayo Dip in 5 Minutes
Sauce Samouraï is a creamy Belgian-style spicy mayo sauce made with mayonnaise, ketchup, harissa, lemon juice, chili, garlic, and salt. It is different from a regular spicy mayo because the ketchup gives it a rounder, slightly sweet tomato flavor while the harissa brings deeper heat than plain hot sauce. I make it when I want a fast dip for fries, burgers, sandwiches, chicken, fish, or a casual snack plate any time of year.

This recipe is based on my YouTube video, with a few small adjustments since publication to make the proportions easier to reproduce at home. I make it this way because the sauce stays simple, balanced, and ready in minutes, but still has that strong “friterie” flavor people love with fries and crispy food.
What Makes Sauce Samouraï Different?
Sauce Samouraï sits somewhere between a creamy burger sauce, a spicy mayo, and a fry dip. It is not the same as homemade Big Mac sauce, which is sweeter and more pickle-forward. It is also not the same as homemade ranch dressing, which is herbier, fresher, and more salad-friendly.
This version is short, punchy, and direct. The mayonnaise gives the body, the ketchup softens the heat, the harissa gives spice and depth, the lemon wakes everything up, and the garlic makes it more savory. I prefer to start with a moderate amount of harissa, then adjust at the end, because every brand of harissa is different. Some are mild and aromatic, while others are very hot.
It is the kind of sauce I like with crispy homemade French fries, homemade burgers, chicken tenders, fish sandwiches, and potatoes. It is rich because of the mayonnaise, so a small spoonful goes a long way. For a lighter plate, I usually serve it with grilled chicken, roasted vegetables, or a simple salad on the side.
Ingredients You’ll Need
The ingredient list is short, which is exactly why this sauce works so well. You do not need cooking, reducing, blending, or complicated technique.
You need mayonnaise, ketchup, harissa, lemon juice, chili, garlic, and salt. If you already make homemade mayonnaise, this sauce becomes even better because the base is richer and fresher. Store-bought mayonnaise also works perfectly for a fast weeknight version.
The ketchup is important. It is not there to make the sauce taste like ketchup. It adds sweetness, color, acidity, and that familiar fast-food flavor. The harissa gives a more complex heat than cayenne alone because it often includes roasted peppers, garlic, spices, and oil.
Lemon juice is the small adjustment that keeps the sauce from feeling too heavy. I use just enough to brighten the mayonnaise without turning the sauce sour.
Step-by-Step Instructions
1. Add the mayonnaise
Place the mayonnaise in a small mixing bowl. Use a bowl that gives you enough room to stir without splashing. Mayonnaise is the base of the sauce, so choose one you like. A neutral, creamy mayonnaise works best.
2. Add the ketchup
Add the ketchup directly into the bowl. This gives the sauce its light orange color and balances the heat from the harissa. Do not add too much at the beginning. Sauce Samouraï should taste spicy and creamy, not like a ketchup dip.

3. Add the harissa
Add 1 teaspoon of harissa for a mild to medium sauce, or 2 teaspoons if you want a stronger kick. I prefer to start with less and adjust after mixing. Harissa can vary a lot depending on the brand, so tasting at the end is more reliable than following a fixed heat level.

4. Add lemon juice, chili, garlic, and salt
Add the lemon juice, chili, garlic, and a pinch of salt. The lemon cuts through the fat, the garlic gives a savory base, and the chili sharpens the heat. If your harissa is already salty, go easy on the salt at first.

5. Mix until smooth
Stir everything together until the sauce is completely smooth and even in color. Scrape the sides of the bowl so the harissa and spices do not stay stuck in one place. The texture should be creamy, glossy, and spoonable.

6. Taste and adjust
Taste the sauce. If you want more heat, add another small spoon of harissa or a pinch more chili. If it tastes too spicy, add a little more mayonnaise. If it tastes flat, add one extra squeeze of lemon or a tiny pinch of salt.

7. Rest if possible
You can serve the sauce right away, but it tastes better after 10 to 15 minutes in the fridge. That short rest gives the garlic, chili, and harissa time to blend into the mayonnaise.

Best Ways to Use Sauce Samouraï
This sauce is perfect with fries, especially if you are making a snack plate or burger night. Serve it next to crispy homemade French fries or spoon it into a small ramekin for dipping.
For chicken, it works beautifully with crispy homemade chicken tenders because the creamy spice balances the crunchy coating. If you want something a little lighter, it also works with air fryer chicken tenders since the sauce brings richness without deep frying the chicken.
It is also excellent on burgers. Try it on a homemade hamburger with brioche buns, a juicy smash burger with bacon and cheddar, or a simple diner-style cheeseburger. The spicy mayo flavor gives the burger more personality without needing a long list of toppings.
For fish, it is a nice alternative to tartar sauce. I still love a classic tartar with ultra-crispy beer-battered fish and chips, but Sauce Samouraï gives the plate a spicier, more modern edge. It also works well in a homemade Filet-O-Fish style sandwich if you want something creamier and hotter than classic tartar.
Substitutions and Variations
If you do not have harissa, use sriracha, sambal oelek, or another chili paste. The flavor will change, but the sauce will still work. Harissa gives the most authentic spicy depth, while sriracha makes it sweeter and more garlicky.
If you want a smokier sauce, add a small pinch of smoked paprika. This works especially well with burgers, grilled chicken, and roasted potatoes.
If you want more acidity, add a touch more lemon juice or a few drops of vinegar. Do this slowly because too much acid can make the sauce taste thin.
If you want a sweeter sauce, add a tiny bit more ketchup. For a sweet-savory mayo-style sauce without the heat, try maple mayo sauce.
If you want a more classic dipping sauce for nuggets, easy homemade sweet and sour sauce is a better fit. This Sauce Samouraï is creamier, spicier, and more focused on fries, burgers, chicken, and sandwiches.
FAQ
How spicy is Sauce Samouraï?
It depends on the harissa. With 1 teaspoon, it is usually medium and balanced. With 2 teaspoons, it becomes much hotter. Start small, mix, taste, then adjust.
Can I make it ahead?
Yes. Make it a few hours ahead and keep it covered in the fridge. The flavor actually improves after a short rest.
How long does it keep?
It keeps for about 3 to 5 days in an airtight container in the refrigerator. Use clean utensils each time so it stays fresh.
Can I use homemade mayo?
Yes, and it makes the sauce even better. A thick homemade mayonnaise gives the sauce a richer texture and cleaner flavor.
Is Sauce Samouraï good on sandwiches?
Yes. It works very well on chicken sandwiches, burgers, fish sandwiches, wraps, and paninis. It is especially good when the sandwich has something crispy or grilled.
Can I make it less spicy?
Yes. Use only ½ teaspoon of harissa, skip the extra chili, and add a little more mayonnaise. You can always add heat later.
What to Serve With Sauce Samouraï
Serve this sauce with crispy homemade French fries for the classic pairing.
For chicken night, spoon it next to crispy homemade chicken tenders or air fryer chicken tenders.
For burgers, spread it inside a homemade hamburger with brioche buns or use it with a juicy smash burger with bacon and cheddar.
For seafood, try it with ultra-crispy beer-battered fish and chips or a homemade Filet-O-Fish style sandwich.
For more sauce ideas, browse easy homemade sauces and condiments, especially if you like keeping a few quick dips ready in the fridge.

Easy Homemade Sauce Samouraï
Ingrédients
- 4 tbsp mayonnaise
- 1 tbsp ketchup
- 1 to 2 tsp harissa
- 1 tsp lemon juice
- ½ tsp chili powder or chili flakes
- ½ tsp garlic powder or finely grated garlic
- Salt to taste
Instructions
- Add the mayonnaise to a small mixing bowl.
- Stir in the ketchup and 1 teaspoon of harissa.
- Add lemon juice, chili, garlic, and a small pinch of salt.
- Mix until smooth, creamy, and even in color.
- Taste and adjust with more harissa for heat, more mayonnaise to soften the spice, or a little more lemon juice if needed.
- Serve right away or refrigerate for 10 to 15 minutes for better flavor.
Notes
FAQ
How spicy is Sauce Samouraï?
It depends on the harissa. With 1 teaspoon, it is usually medium and balanced. With 2 teaspoons, it becomes much hotter. Start small, mix, taste, then adjust.Can I make it ahead?
Yes. Make it a few hours ahead and keep it covered in the fridge. The flavor actually improves after a short rest.How long does it keep?
It keeps for about 3 to 5 days in an airtight container in the refrigerator. Use clean utensils each time so it stays fresh.Can I use homemade mayo?
Yes, and it makes the sauce even better. A thick homemade mayonnaise gives the sauce a richer texture and cleaner flavor.Is Sauce Samouraï good on sandwiches?
Yes. It works very well on chicken sandwiches, burgers, fish sandwiches, wraps, and paninis. It is especially good when the sandwich has something crispy or grilled.Can I make it less spicy?
Yes. Use only ½ teaspoon of harissa, skip the extra chili, and add a little more mayonnaise. You can always add heat later.🔗 Useful Links
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