Sauces & Condiments
This copycat Ken's Tartar Sauce delivers that signature zesty, briny kick you crave with seafood—just like the restaurant version. The secret lies in balancing creamy mayonnaise with tangy lemon, briny capers, and finely chopped pickles for that signature texture.
I've perfected this recipe over years of testing, ensuring every spoonful delivers that perfect harmony of flavors.
The beauty of this sauce is its simplicity—just six core ingredients that come together in minutes. No fancy techniques required, just precise measurements and a willingness to taste as you go.
The capers and pickles add that signature briny bite, while the lemon brightens everything up, making it the ideal companion for fried shrimp, fish tacos, or even burgers.
What you'll end up with is a smooth, slightly grainy sauce with a bright lemon tang and salty crunch from the capers and pickles. It's creamy enough to coat every bite but still has that signature texture that sets it apart from regular tartar sauce.
This is the kind of sauce that elevates simple dishes into something special.
Whether you're serving it with golden fries, crispy fish, or a juicy burger, this tartar sauce will become your new go-to condiment. The best part? It keeps well in the fridge for up to a week, so you can make a batch and enjoy it all week long.
Let's get started!
Ingredients for copycat ken's tartar sauce
Six simple ingredients transform into that iconic briny, zesty tartar sauce you love.
| Ingredient | Amount | Notes |
|---|---|---|
| Mayonnaise 🥛 | 1 cup | High-quality, smooth texture preferred |
| Capers 🫒 | 2 tbsp | Chopped finely, not drained |
| Cornichons 🥒 | 2 tbsp | Finely chopped, skin removed |
| Fresh Lemon Juice 🍋 | 1 ½ tbsp | Freshly squeezed, no pulp |
| Dijon Mustard 🌶️ | 1 ½ tsp | Mild or medium heat preferred |
| Sea Salt 🧂 | ½ tsp | Fine grain preferred |
| Black Pepper 🌶️ | ¼ tsp | Freshly ground preferred |
| Ice Water 💧 | 1 tbsp | For thinning if needed |
The mayonnaise is non-negotiable—Duke's or Hellmann's are my go-tos for that smooth, rich base. The capers and cornichons (those tiny French pickles) are the secret weapons. Trader Joe's has the best pre-chopped cornichons, but if you're using whole ones, chop them super fine. Fresh lemon juice is a must—bottled just won't cut it. I always squeeze mine right before mixing to keep the flavor bright. The Dijon mustard adds depth without overpowering, so don't skip it.
No capers? Finely chopped green olives at half the amount can work in a pinch, but you'll lose that signature briny punch. Fresh lemon juice unavailable? Bottled lemon juice with a pinch of sugar helps, but it won't be quite the same. The ice water is your secret weapon if the sauce gets too thick—just add a splash at a time. For a spicier kick, add a dash of hot sauce or cayenne. This sauce is all about balance, so taste as you go. The salt and pepper are the final touches—adjust to taste, but don't overdo it.
This sauce keeps beautifully in the fridge for up to 1 week, sealed in an airtight container. I like to portion it into small jars so it's ready whenever I crave seafood night. If it thickens in the fridge, just stir in a splash of water or lemon juice to loosen it up. Trust me, it only gets better after sitting for a few hours—all the flavors meld together perfectly. Freezes well too, though the texture might change slightly.
Why You'll Love This Recipe
- Here’s what sold me: this recipe doubles as a pantry staple. Make a batch, and suddenly you’ve got backup for next week’s dinner, a quick fix for takeout cravings, or a last-minute hostess gift. And since it keeps well in the fridge, you’re not scrambling when inspiration (or hunger) strikes. Budget-friendly? Absolutely. Stress-free? Even better.
- Five-Ingredient Magic: I swear, this is the kind of recipe where you’ll stare at your pantry and think, "I already have all this?" Mayonnaise, capers, cornichons—those little pickles are the secret—and a squeeze of lemon. No fancy gadgets, no last-minute grocery runs. Just mix, taste, adjust. That’s it.
- Tartar Perfection: Between us, the balance here is chef’s kiss—creamy mayo, the briny punch of capers, the sharp tang of cornichons, and that Dijon mustard cutting through like a knife. It’s not too sweet, not too heavy; it’s the kind of sauce that makes you close your eyes and nod. Honestly, I’ve tried store-bought, but this? This is the real deal.
- Game for Any Meal: Slather it on fish tacos, dip those golden fries in it, or—don’t laugh—spread it on a grilled cheese. It’s my go-to for potlucks, picnic sandwiches, or even a lazy Sunday brunch. The best part? It’s so versatile, you’ll find excuses to make it just to have it on hand.
Step-by-step instructions for copycat ken's tartar sauce
Here's how to recreate that iconic, tangy, briny tartar sauce in just minutes.
Combine the Base Ingredients
In a medium bowl, add the 1 cup mayonnaise as your foundation. This is your base, so choose a high-quality brand with a smooth, creamy texture—it makes all the difference in the final consistency. I like to use Duke's or Hellmann's for that classic restaurant-style richness.
Next, add the 2 tablespoons finely chopped capers and 2 tablespoons finely chopped cornichons. Make sure they're evenly distributed throughout the mayonnaise. The capers bring that signature briny punch, while the cornichons add a subtle, tangy crunch. Use a rubber spatula to gently fold everything together until fully incorporated—no need to overmix, just until you see no more white streaks.
Add the Flavor Boosters
Now it's time to build the signature flavor profile. Stir in the 1.5 tablespoons fresh lemon juice—this is where the sauce gets its bright, zesty kick. Freshly squeezed lemon works best; bottled juice can sometimes add unwanted sweetness or artificial aftertaste that throws off the balance.
Add the 1.5 teaspoons Dijon mustard, 0.5 teaspoon sea salt, and 0.25 teaspoon black pepper. The Dijon mustard adds depth and a slight tang, while the salt and pepper round out the flavors. Mix everything together until completely smooth. At this point, you should notice the sauce developing that classic tartar sauce color—lighter than the original mayonnaise but with a subtle greenish tint from the capers.
Taste and Adjust for Perfection
This is where the magic happens. Taste your sauce and evaluate the balance. You're looking for a perfect harmony of briny, tangy, and creamy flavors. If it needs more brightness, add a tiny splash more lemon juice—just ½ teaspoon at a time. For more brininess, add another ½ teaspoon capers. Need more depth? A pinch more Dijon mustard or salt can help.
I know it seems counterintuitive, but don't be afraid to taste as you go. This sauce is all about balance, and your taste buds are the best judge. The sauce should be tangy enough to make your mouth pucker slightly but still creamy and rich—not overpowering. Once you're happy with the flavor, give it one final stir to ensure everything is well combined.
Thin if Needed and Chill to Set
If your sauce is too thick after mixing, add the 1 tablespoon ice water one teaspoon at a time until you reach your desired consistency. You want it smooth and spreadable, but not too thin that it loses its body. The ice water helps thin it without diluting the flavors too much.
Transfer the sauce to an airtight container and refrigerate for at least 30 minutes before serving. This chilling time allows all the flavors to meld together perfectly. The sauce will thicken slightly as it cools, so if you prefer it thinner when serving, you can add a tiny splash more ice water when you're ready to use it. The longer it chills, the more developed the flavors become—up to 24 hours ahead of time works great for meal prep.
Pro Tips For Making Copycat Ken'S Tartar Sauce
- CHOP CORNICHONS SMALL: Tiny dice—about 1/8-inch pieces—stop them from sinking to the bottom like little green rocks. I learned this the hard way after serving a batch where every bite felt like a surprise pickle. Use a sharp knife and don’t rush; these should be uniform.
- DRAIN CAPERS WELL: Rinse them first, then pat dry with a paper towel—briny capers in wet sauce make the whole thing taste like a pickle jar exploded. I skip this and get a soggy, uneven texture. Trust me, a quick towel press makes a real difference.
- WHISK IN MUSTARD LAST: Start with mayo and lemon, then fold in mustard at the very end. Adding it early turns the sauce into a thick, grainy paste. Stir it in gently—just until combined—so it blends smoothly without overworking.
- MEASURE LEMON JUICE: Use a spoon—not the wedge—so you’re not guessing. Fresh lemon juice varies wildly, and too much turns the sauce sharp and unbalanced. Aim for 1 tablespoon, then taste and adjust. (Yes, even if you’re impatient like me.)
Health benefits of this copycat ken's tartar sauce
Rich in Healthy Fats
This tartar sauce gets its creamy base from mayonnaise, which contains heart-healthy fats from egg yolks. A 1-cup serving provides about 15 grams of fat, primarily monounsaturated and polyunsaturated fats that support brain function and reduce LDL cholesterol when consumed in moderation.
The capers and cornichons add zero fat, keeping this sauce a lighter option compared to many other creamy dips. 💛
Antioxidant Boost
The capers and cornichons in this sauce pack a punch of antioxidants like polyphenols and vitamin C. Capers are particularly rich in rutin, a flavonoid that helps reduce inflammation.
Fresh lemon juice contributes additional vitamin C (about 10% of your daily value per serving), which supports immune function and skin health. The Dijon mustard adds a touch of allium compounds from garlic, known for their antimicrobial properties.
Low-Calorie Condiment
At just around 200 calories per serving, this tartar sauce is a lighter choice compared to many other creamy dips. The lemon juice and capers add tangy flavor without significant calories, making it a great option for those watching their calorie intake.
The sauce is also gluten-free and dairy-free, making it versatile for various dietary needs. The key is moderation—just 2 tablespoons provide a flavorful boost without overdoing it.
Digestive Benefits
The Dijon mustard in this sauce contains digestive enzymes that aid in breaking down proteins, making it easier for your body to absorb nutrients. The black pepper adds a touch of piperine, a compound shown to boost metabolism and improve nutrient absorption.
While this sauce isn't a digestive powerhouse on its own, its ingredients work together to support overall gut health when paired with fiber-rich foods like vegetables or whole grains.
Versatile Nutrient Pairing
This sauce shines when paired with nutrient-dense seafood like salmon or shrimp, which provide omega-3 fatty acids and high-quality protein. The lemon in the sauce enhances iron absorption from plant-based sides, while the capers add iodine, essential for thyroid function.
For a balanced meal, serve with steamed broccoli or a mixed greens salad to round out your plate with fiber, vitamins A and C, and minerals like calcium and potassium. 💡
Blood Pressure Support
The sea salt in this sauce contains sodium, so enjoy it in moderation if you're watching your intake. However, the capers and lemon juice also contribute potassium, which helps balance sodium levels and supports healthy blood pressure.
For a lower-sodium version, reduce the salt to ¼ teaspoon and rely more on the natural brininess of the capers and lemon. This makes the sauce a smart choice for those monitoring their sodium consumption.
Nutrition facts
Frequently asked questions
Why does this tartar sauce taste different from store-bought versions?
This recipe captures the signature briny, tangy flavor of Ken's Tartar Sauce by using fresh lemon juice and finely chopped capers and cornichons instead of the dried or pre-packaged versions often found in store-bought sauces. The fresh ingredients create a more vibrant, complex flavor profile that's brighter and less artificial. The Dijon mustard also adds depth that many commercial versions lack.
Can I make this sauce without capers?
Yes! If you can't find capers, substitute with ½ teaspoon finely chopped green olives or ½ teaspoon anchovy paste for that briny kick. For a milder version, add an extra ½ teaspoon sea salt to compensate. Just be aware the texture and flavor will differ slightly from the original. The sauce will still be delicious—just with a different character.
How long can I store this tartar sauce in the fridge?
This sauce keeps well in an airtight container in the refrigerator for up to 1 week. The flavors actually improve as it sits, becoming more balanced and developed. If it thickens over time, simply stir in a splash of lemon juice or ice water to restore the perfect consistency. For longer storage, freeze for up to 3 months, though texture may change slightly upon thawing.
What's the best way to serve this sauce?
This versatile sauce is perfect for dipping golden fries or crispy seafood like fish and chips, but it also elevates burgers, sandwiches, and even loaded baked potatoes. For an extra-special touch, serve it chilled in a small bowl with a garnish of lemon zest or fresh parsley. The sauce's bright flavors work especially well with rich, fried foods that need a tangy contrast.
Can I make this sauce vegan?
Swap the mayonnaise for a high-quality vegan mayo like Just Mayo or Vegenaise. The rest of the recipe remains the same, and you'll still get that signature briny-tangy flavor. For extra richness, you might want to add 1 teaspoon nutritional yeast to compensate for the lack of egg yolks in traditional mayo. The texture will be just as smooth and creamy.