Sauces & Condiments
Creating Captain D's copycat tartar sauce at home delivers that signature creamy, herby, and slightly tangy flavor that pairs perfectly with fried fish or seafood baskets. The secret lies in balancing mayo with finely chopped capers, pickles, and fresh herbs—plus a touch of crunchy onion topping that makes it irresistible.
I've replicated this restaurant favorite after testing countless variations, and the results are indistinguishable from the original.
This sauce comes together in just 10 minutes with simple ingredients you likely already have in your pantry. The key is using fresh dill and parsley for that bright, herby flavor, while the capers and pickles add just the right amount of briny tang.
The recipe also includes a quick method for achieving that perfect crunchy onion topping without overpowering the creamy base.
What you'll end up with is a velvety, slightly grainy sauce with layers of flavor—creamy from the mayo, briny from the capers, tangy from the pickles, and fresh from the herbs.
The crunchy onion topping adds texture that keeps every bite interesting. This is the kind of sauce that elevates simple fried foods into something restaurant-worthy.
Store any leftovers in an airtight container in the refrigerator for up to 5 days, though it rarely lasts that long. For extra heat, add a pinch of cayenne or hot sauce, or make it dairy-free by substituting vegan mayo. Let's get started on this crowd-pleasing recipe!
Ingredients for captain d's copycat tartar sauce
Nine pantry staples transform into that iconic creamy, tangy tartar sauce you crave.
| Ingredient | Amount | Notes |
|---|---|---|
| Mayonnaise 🥛 | 1 cup | Dairy or vegan preferred |
| Fresh Dill 🌿 | ¼ cup | Finely chopped, stems removed |
| Fresh Parsley 🌿 | ¼ cup | Finely chopped, flat-leaf preferred |
| Capers 🍅 | 2 tbsp | Chopped, drained well |
| Dill Pickle Juice 🥒 | 1 tbsp | From a jar, not vinegar |
| Dill Pickle 🥒 | 1 whole | Finely chopped, seeds removed |
| Yellow Onion 🧅 | ½ cup | Finely chopped, white part only |
| Lemon Juice 🍋 | 1 tbsp | Freshly squeezed |
| Salt 🧂 | ½ tsp | Kosher or sea salt |
| Black Pepper 🌶️ | ¼ tsp | Freshly ground preferred |
The mayo is the base, so Duke's or Hellmann's work great—they're the most widely available and have that perfect balance of richness. For fresh herbs, Trader Joe's has the best pre-washed dill and parsley bundles, but any grocery store's fresh section will do. Look for bright green leaves with no wilt. The capers? Penzeys has the best quality, but the tiny jars at the grocery store work fine if they're not past their prime. Just make sure they're drained well—no one wants a watery sauce. The pickles should be dill pickles, not bread and butter—Heinz or Claussen are solid choices.
No fresh dill? Dried dill at one-third the amount works, but it won't be as bright. Short on parsley? Cilantro or basil can stretch it, but you'll lose that signature tartar flavor. The pickle juice can be swapped for white vinegar or lemon juice, but you'll lose some of that tangy depth. The onion is key for texture—red onion works too, but yellow gives the classic flavor. If you're making this dairy-free, vegan mayo like Follow Your Heart is a must. For extra tang, add another tablespoon of pickle juice—just don't overdo it.
This sauce keeps for 5 days in the fridge, sealed tight in an airtight container. The crunchy onion topping stays fresh for about 3 days if you keep it separate. I like to portion it into small containers so I can grab just what I need for fish or chips. It also freezes beautifully for 3 months—just thaw it in the fridge overnight. The texture might get slightly grainy after freezing, but a quick whisk brings it back to perfection.
Why You'll Love This Recipe
- I’ll be real: my fridge is always stocked with mayo and pickles, so this recipe never feels like a special occasion. Use up a few sprigs of parsley or dill before they wilt? Boom—sauce. Leftover capers? Perfect. It’s my budget-friendly way to make restaurant-quality flavor without breaking the bank.
- Five-Ingredient Magic: Honestly, I’ve made this sauce at least 15 times now—it’s that simple. Just mayo, fresh dill, parsley, capers, and a splash of pickle juice. No fancy techniques, no waiting for anything to cool. The only real step is chopping herbs, and even that takes less than two minutes.
- Pickle Juice Secret: Here’s what sold me—the pickle juice. It’s the little acid kick that keeps this sauce from tasting flat. That tangy brightness cuts through the richness of the mayo, making it ridiculously good with fish, fries, or even straight from the spoon. (Yes, even on a Tuesday night.)
- Game for Any Meal: Between us, this sauce is my go-to for everything from fish tacos to loaded baked potatoes. It’s the perfect side for summer BBQs, a quick lunch spread, or even a fancy dinner when you’re feeling lazy. The capers add a salty crunch, so it’s never boring.
Step-by-step instructions for Captain D's copycat tartar sauce
Here's how to nail the perfect blend of creamy, tangy, and briny flavors just like the restaurant version.
Chop and Combine the Fresh Herbs
Start by finely chopping the 0.25 cup fresh dill and 0.25 cup fresh parsley using a sharp chef's knife. I like to stack the herbs and fold them together between chops to get an even, fine texture—this prevents any large chunks from ruining the smooth texture of the sauce. Place the chopped herbs in a medium bowl.
Next, add the 2 tablespoons chopped capers (make sure they're well drained) and the 1 whole dill pickle that's been finely chopped and seeded. The capers will add that signature briny kick, while the pickle brings a subtle tang that balances the richness of the mayonnaise. Mix everything together gently with a fork, just until combined.
Mix in the Wet Ingredients
To the herb and caper mixture, add the 1 cup mayonnaise, 1 tablespoon dill pickle juice, and 1 tablespoon freshly squeezed lemon juice. I always use a rubber spatula for this step because it helps scrape up any ingredients that stick to the bowl. Mix everything together until you have a smooth, well-combined sauce.
This is where the magic happens—the lemon juice brightens the flavors while the pickle juice adds depth. If you're using a vegan mayonnaise, you might want to add an extra ½ teaspoon of lemon juice to cut through the richness. Taste the mixture now—it should be tangy and slightly briny, but still creamy.
Season and Fold in the Onion
Add the 0.5 teaspoon salt and 0.25 teaspoon freshly ground black pepper to the sauce and mix well. Now, finely chop the 0.5 cup yellow onion (using only the white part) and fold it into the sauce. The onion adds a subtle crunch and sharpness that cuts through the creaminess of the mayonnaise.
Here's the thing—don't chop the onion too fine, or it'll turn mushy. You want small, even pieces that add texture without overpowering the sauce. Mix everything together one last time, giving it a good stir to ensure the onion is evenly distributed.
Chill and Rest for Maximum Flavor
Cover the bowl with plastic wrap and refrigerate the sauce for at least 1 hour (or up to 24 hours). This chilling time is crucial—it lets the flavors meld together and the sauce thicken slightly, giving you that perfect consistency. If you're in a hurry, you can chill it for 30 minutes, but the longer it rests, the better it tastes.
Before serving, give the sauce one final taste. If it needs more brightness, add a little more lemon juice. If it's too thick, stir in 1 teaspoon of water or pickle juice to loosen it up. The sauce should be creamy, tangy, and just a little briny—just like the restaurant version.
Serve With Confidence
This sauce is best served immediately after chilling, but it'll keep in the refrigerator for up to 5 days if stored in an airtight container. It's perfect for dipping fries, topping fish tacos, or even spreading on a sandwich. The combination of fresh herbs, briny capers, and tangy pickle juice makes it irresistibly flavorful.
Pro tip: If you're using this for fish or seafood, serve it immediately after assembling your dish. The sauce pairs especially well with crispy beer-battered fish or golden-fried shrimp. Enjoy your homemade copycat tartar sauce—it's so good, you'll never buy the restaurant version again!
Pro Tips For Making Captain D'S Copycat Tartar Sauce
- CHOP DILL LIKE CRAZY: Fresh dill is the soul of this sauce, so don’t be shy—chop it fine, not just roughly. I used to eyeball it, but the flavor gets lost when it’s too big. A sharp knife and a few quick chops (no food processor—it turns to mush) make all the difference.
- SALT THE PICKLE JUICE: That dill pickle juice is salty, but not enough to balance the mayo. Taste it first—if it’s bland, add a pinch of salt. I learned this the hard way when my sauce tasted flat; a little extra salt here keeps the flavors in check.
- MIX BY HAND, NOT SPONGE: Stirring with a fork or spoon breaks up the capers and herbs evenly. A rubber spatula works too, but avoid a whisk—it’ll overaerate the mayo and make the sauce look (and taste) sad. Keep it smooth, not frothy.
- USE LESS CAPERS FIRST: Start with half the capers called for—you can always add more. Those little brine-soaked brats pack a punch, and too many can turn your sauce into a caper salad. Taste as you go; balance is everything.
Common mistakes when making this dish
Over-Mixing the Sauce
I’ve ruined tartar sauce by over-mixing it until it turns into a thick paste with no texture. The goal is a slightly grainy, creamy consistency—overworking it breaks down the mayo’s emulsification and makes the sauce too smooth.
Mix just until combined, then let it rest. A rubber spatula helps scrape up any stubborn bits without overmixing. 💡
Skipping the Chill Time
Rushing the 1-hour chill means the flavors won’t meld properly, and the sauce will taste flat. The cold rest period lets the herbs release their oils and the mayo firm up slightly.
If you’re short on time, chill for at least 30 minutes, but I promise the extra time makes a difference. Trust the process!
Using Poor-Quality Ingredients
Cheap, wilty herbs or vinegary capers will ruin your sauce. Invest in fresh dill and parsley—look for bright green leaves with no brown spots. For capers, Penzeys or high-quality jarred ones are worth it. The difference between fresh and stale ingredients is night and day in tartar sauce. 🌿
Adding Onion Too Early
Folding in the chopped onion while the sauce is still warm causes it to soften into mush. Always add the onion last, after the sauce has chilled.
This keeps it crisp for that perfect crunch. If you’re worried about sogginess, store the onion separately and mix it in just before serving.
Ignoring the Pickle Juice
The 1 tablespoon dill pickle juice is non-negotiable—it adds depth and balances the flavors. Skipping it or using vinegar instead leaves the sauce tasting flat. Save the juice from the jar of pickles you’re using, and don’t substitute with lemon juice alone.
The briny tang is what makes this sauce shine.
Not Tasting as You Go
Taste your sauce at every step—after mixing the herbs, after adding the wet ingredients, and before serving. Adjust seasoning with lemon juice, pickle juice, or salt as needed. The restaurant version is perfectly balanced, and your homemade sauce should be too. Don’t be afraid to tweak it!
Nutrition facts
Frequently asked questions
Can I make this tartar sauce without fresh herbs?
Yes, but it won't taste exactly the same. Use 1 teaspoon dried dill and 1 teaspoon dried parsley instead of fresh—just remember dried herbs are more concentrated. For extra flavor, add ½ teaspoon onion powder or a pinch of garlic powder to compensate for the missing freshness.
How do I store leftover tartar sauce?
Keep it in an airtight container in the fridge for up to 5 days. The texture stays perfect when stored properly. For longer storage, freeze it for 3 months, but thaw it overnight in the fridge to preserve consistency. The crunchy onion topping should be added fresh before serving.
Why does my tartar sauce taste too salty?
Capers and pickles already contain salt, so start with just ¼ teaspoon salt and taste as you go. If it's still too salty, balance it with 1 extra tablespoon lemon juice or pickle juice. The acidity helps dilute the saltiness while enhancing the tangy flavor. Adjust gradually—you can always add more, but you can't take it out.
What's the best way to serve this sauce?
This sauce shines with fried fish, seafood baskets, or golden fries. For extra flair, serve it in a small bowl with a sprinkle of paprika or a drizzle of hot sauce on top. It also works as a sandwich spread or a dip for veggie sticks. The key is serving it chilled for that perfect creamy texture.
Can I make this dairy-free?
Use vegan mayo like Follow Your Heart and add ½ teaspoon extra lemon juice to cut through the richness. The texture will be slightly lighter, but the tangy, briny flavors remain intact. For extra creaminess, stir in 1 teaspoon nutritional yeast while mixing.