
Hey, Welcome to the Jack In The Box Mayo Onion Sauce Recipe. Jack In The Box Mayo Onion Sauce is a creamy, tangy, and slightly sweet condiment that adds a burst of flavor to any burger, sandwich, or fries.
If you’ve ever tasted this sauce at Jack In The Box, you already know how addictively rich and zesty it is.
I wanted to recreate that at home, and guess what? I nailed it! Today, I’m sharing the easiest way to make this flavorful recipe right in your kitchen.
Recipe Overview
Prep Time: 10 minutes
Cook Time: 0 minutes
Total Time: 10 minutes
Servings: 6
Cuisine: American
Category: Sauce
History and Origin
Jack In The Box, a popular American fast-food chain, introduced this creamy Mayo Onion Sauce to enhance its sandwiches and burgers.
Over time, its tangy-sweet flavor gained a loyal following and became a signature sauce many fans wanted to recreate at home.
What does Jack In The Box Mayo Onion Sauce taste like?
Jack In The Box Mayo Onion Sauce tastes creamy and rich with a perfect balance of tanginess from vinegar, sweetness from onion and sugar, and a hint of garlic.
It’s smooth, zesty, and adds an irresistible punch to any dish. By the way, you can also try the Jack in the Box Taco Recipe.
Ingredients
You will need the following ingredients to start making the Best Jack In The Box Mayo Onion Sauce Recipe:
| Ingredients | Quantity |
|---|---|
| Mayonnaise | 1 cup |
| Finely grated onion | 2 tablespoons |
| White vinegar | 1 teaspoon |
| Sugar | ½ teaspoon |
| Garlic powder | ¼ teaspoon |
| Onion powder | ¼ teaspoon |
| Salt | To taste |
| Black pepper | To taste |
Equipment Needed
Also, gather the following equipment, as they are necessary to craft your Easy Jack In The Box Mayo Onion Sauce:
- Mixing bowl
- Whisk or spoon
- Measuring spoons
- Grater
- Airtight container
How to Make Jack In The Box Mayo Onion Sauce Recipe
Step 1: Prepare the ingredients
Grate the onion finely using a small grater. Measure all other ingredients accurately to ensure a balanced flavor.
Step 2: Mix everything together
In a bowl, combine mayonnaise, grated onion, vinegar, sugar, garlic powder, onion powder, salt, and black pepper. Whisk until the sauce is creamy and silky.
Step 3: Taste and adjust
Taste the sauce and adjust the seasoning if needed. Add a pinch of salt or vinegar for extra punch according to your liking.
Step 4: Chill before serving
Transfer the sauce into an airtight container and refrigerate for at least 30 minutes. This helps all flavors blend beautifully.
Recipe Card

Jack in the Box Mayo Onion Sauce Recipe
Ingredients
Equipment
Method
- Grate the onion finely using a small grater. Measure all other ingredients accurately to ensure a balanced flavor.

- In a bowl, combine mayonnaise, grated onion, vinegar, sugar, garlic powder, onion powder, salt, and black pepper. Whisk until the sauce is creamy and silky.

- Taste the sauce and adjust the seasoning if needed. Add a pinch of salt or vinegar for extra punch according to your liking.

- Transfer the sauce into an airtight container and refrigerate for at least 30 minutes. This helps all flavors blend beautifully.

Notes
Nutritional Information
Below, I have listed the nutritional information for the Jack In The Box Mayo Onion Sauce Recipe:
| Nutrient | Amount (per serving) |
|---|---|
| Calories | 150 kcal |
| Fat | 15 g |
| Carbohydrates | 2 g |
| Protein | 0.3 g |
| Sugar | 1 g |
| Sodium | 140 mg |
Serving Suggestions
This Jack In The Box Mayo Onion Sauce is perfect for spreading on burgers, sandwiches, or wraps.
You can also use it as a dip for fries, chicken nuggets, or onion rings. It pairs wonderfully with grilled meats, too.
Storage Tips
For up to a week, keep this sauce refrigerated in an airtight container. Stir before using each time.
Avoid freezing it, as mayonnaise tends to separate when thawed, affecting the sauce’s smooth texture and creamy consistency.
Tips for the Perfect Mayo Onion Sauce
Always use fresh, finely grated onion for the best flavor. Avoid adding too much vinegar, as it can overpower the creaminess.
Chill the sauce for at least 30 minutes before serving, so the flavors fully develop into that rich and tangy Jack In The Box taste.
Why You’ll Love This Sauce
You’ll love this sauce because it’s creamy, tangy, and perfectly balanced. It turns any plain sandwich or burger into something restaurant-worthy.
Plus, it’s ready in just minutes using simple ingredients you already have in your kitchen.
Creative Ways to Use This Sauce
This Jack in the Box Mayo Onion Sauce Recipe isn’t just for burgers. Try drizzling it over grilled chicken, using it as a dip for crispy fries, or even as a spread for wraps and sliders.
You can also use it as a salad dressing base by thinning it with a splash of milk or lemon juice.
Common Mistakes to Avoid
One common mistake is adding too much grated onion, which can make the sauce watery.
Also, don’t skip the chilling step, as it helps the sauce thicken and the flavors blend perfectly. Always taste and adjust seasoning before serving for the best results.
Variations to Try
Want to customize your Jack in the Box Mayo Onion Sauce Recipe? Add a teaspoon of Dijon mustard for a zesty kick, or a pinch of smoked paprika for a smoky twist.
If you love heat, mix in a few drops of hot sauce to make a spicy version that pairs perfectly with fries or wings.
Best Dishes to Pair With This Sauce
This creamy Jack in the Box Mayo Onion Sauce Recipe pairs beautifully with burgers, crispy chicken sandwiches, and even grilled fish.
You can also use it as a dip for fried pickles or onion rings. Its rich, tangy flavor enhances anything savory, making every bite more delicious and satisfying.
Conclusion
This Jack In The Box Mayo Onion Sauce Recipe is quick, delicious, and perfect for bringing that fast-food flavor right to your kitchen table.
With these words, we came to the end of this article. If you like this recipe, then please rate this post with 5 stars at the end of the FAQs section, and don’t forget to share it with your loved ones!
Happy Cooking!
Frequently Asked Questions (FAQs)
What is Jack In The Box Mayo Onion Sauce made of?
It’s made from mayonnaise, grated onion, vinegar, sugar, and a few spices for a tangy, creamy flavor.
Can I use red onion instead of white onion?
Yes, but white onion gives a milder flavor, similar to the original Jack In The Box sauce.
How long can I store this sauce?
You can store it in the fridge for up to one week in an airtight container.
Can I use low-fat mayonnaise?
Yes, low-fat or light mayonnaise works well if you prefer a lighter version.
Is this sauce gluten-free?
Yes, this sauce is naturally gluten-free since none of the ingredients contain gluten.
You will also like the Jack in the Box Secret Sauce Recipe.
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