Ready to branch out from plain ketchup with your French fries? This creamy, lightly spicy French fry sauce recipe is the best!

Image of fry sauce, taken from above, surrounded by crispy, thin french fries.

When I was a little kid, the only potatoes I would even consider putting near my lips were French fries. And they had to be the thin and crispy kind, not the thick cut potatoey kind. 

Plus, I needed to have ketchup. LOTS of ketchup to dip the fries in. 

I’m grown up now and I truly love potatoes, all kinds. My favorite though? I’d probably still choose thin crispy fries with lots and lots of ketchup. 

This French fry sauce recipe is winning me over though. Creamy with mayonnaise, tangy from ketchup and apple cider vinegar, and a little spice from mustard and hot sauce. Oh yes, and a bit of pickle relish stirred in too. 

A super easy sauce recipe that’s perfect for dipping fries into but also a winner on a hamburger (think Big Macs) or roast beef sandwich, you’ll want to keep a bowl of this fry sauce in your refrigerator.  

Hint: Try it on super crispy homemade air fryer French fries (pictured). It’s delicious with sweet potato fries. It’s also perfect for air fryer chicken nuggets or air fryer mozzarella sticks. Call me crazy, but this sauce would be great drizzled over broiled salmon or grilled chicken, too. 

Image of light orange french fry dipping sauce made with mayo and ketchup.

About this French fry sauce:

This French fry sauce recipe is ridiculously easy to make. It takes less than 5 minutes to stir up. Enlist the help of your kids to initiate them into the joys of cooking. I’m serious, a kid without much experience in the kitchen would love to make this sauce, and eat it!

You probably have everything you need in your pantry to make this super simple recipe:

  • mayo
  • ketchup
  • apple cider vinegar
  • dill pickle relish
  • mustard
  • hot sauce

Keep reading for ways to make this French fry sauce your own. 

Just measure it out and mix it up. Everyone will be so impressed with your “secret” sauce and will clamor for the recipe. Just tell them it’s a family secret, or better yet, tell them you found the recipe at Rachel Cooks!

Image of french fries with delicious light-orange fry sauce made with mayonnaise, ketchup, mustard, relish, and apple cider vinegar.

How to make this French fry dip your own:

Want to make your very own secret dipping sauce? Here are a few ideas that you may experiment with.

  • Make it more spicy. I keep the heat level relatively low so my kids will eat it but you’re welcome to crank up the heat in this dipping sauce by adding more hot sauce. Use your favorite kind of hot sauce: Tabasco, Frank’s, Sriracha, Louisiana, chipotle, etc. There are a lot of different kinds to choose from. 
  • Instead of ketchup, use barbecue sauce. 
  • Replace the yellow mustard with Dijon or horseradish.
  • Use sweet pickle relish instead of dill. Or leave it out. 

Photograph of French Fry Dipping Sauce in a jar with fries scattered around it.

Storage Tips

You can keep a tightly covered bowl or jar of this dipping sauce in your fridge for whenever you need it (and why wouldn’t you want to?).  It will keep at least a week. Just give it a stir before you serve it. 

Note: It won’t keep as long if there are double dippers in your family, or if the sauce is left sitting out on the counter for and extended period of time. Better just to take out what you need and keep the rest in the fridge. 

Image of french fries with sauce.

Other dip recipes

If you like this French fry sauce, but want to branch out even more, here’s a few excellent ideas:


Image of light orange french fry dipping sauce made with mayo and ketchup.

Fry Sauce - Easy French Fry Dipping Sauce

Yield: 1 cup
Prep Time: 5 minutes
Total Time: 5 minutes

Ready to branch out from plain ketchup with your French fries? This creamy, lightly spicy French fry sauce recipe is the best!


  • ½ cup ketchup
  • ½ cup mayonnaise
  • 1 tablespoon apple cider vinegar
  • 1 tablespoon dill pickle relish
  • 1 teaspoon yellow mustard
  • 1 teaspoon hot sauce (such as Frank’s)


  1. In a small bowl or large measuring cup, stir all ingredients together.
  2. Serve cold with French fries, chips, or as a spread on burgers or other sandwich. Store leftovers in fridge. 


    • Store leftovers in a tightly covered bowl or jar in your fridge for about a week. Stir before serving.
Nutrition Information:
Yield: 16 Serving Size: 1 tablespoon
Amount Per Serving: Calories: 55Total Fat: 5gSaturated Fat: 1gTrans Fat: 0gUnsaturated Fat: 4gCholesterol: 3mgSodium: 131mgCarbohydrates: 2gFiber: 0gSugar: 2gProtein: 0g sometimes provides nutritional information, but these figures should be considered estimates, as they are not calculated by a registered dietitian. Please consult a medical professional for any specific nutrition, diet, or allergy advice.

Did you make this recipe?

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Verdict: This sauce is quite addicting with salty, thin french fries! 
Husband’s take: Ben is more of a ketchup guy…he has an aversion to mayo.
Changes I would make: None at all!
Difficulty: Easy!