Cream of Tartar Sauce Recipe: Tangy Spread for Seafood Lovers

This tangy condiment elevates seafood with its bright, balanced flavor profile. Cream of tartar provides the signature zip that pairs perfectly with fried fish or shrimp.

Simple to prepare with everyday ingredients, this sauce keeps well for up to a week. It delivers professional-quality results with minimal effort.

Ingredients for Cream of Tartar Sauce

Nine simple ingredients create this bright, balanced seafood sauce with professional flair.

The mayonnaise base is critical here—Hellmann’s Vegan or Sir Kensington’s deliver the right creaminess without dairy. Cream of tartar can be found in the baking aisle at any major grocery store; Whole Foods carries it in bulk if you want to stock up. For the capers, look for non-pasteurized varieties in glass jars—they have better texture and flavor than the canned ones.

No vegan mayo? Blend silken tofu with oil and lemon for a quick substitute. Out of capers? Chopped green olives at half the amount work in a pinch. Fresh dill is ideal but dried dill at one-third the quantity can substitute. The Dijon mustard adds depth—yellow mustard lacks the complexity but will do if that’s all you have.

This sauce stays fresh in the fridge for 1 week in an airtight container. The flavors meld and improve after 24 hours, so make it a day ahead if possible. Stir before using as ingredients may settle.

Step-by-Step Instructions for Cream of Tartar Sauce

Master this technique for a perfectly balanced sauce with bright acidity and rich depth.

Step 1: Combine the Wet Base Ingredients

In a medium mixing bowl, whisk together the 1 cup Mayonnaise, 1 tbsp Dijon Mustard, 1 tbsp White Wine Vinegar, and 1 tbsp Lemon Juice until fully incorporated. The mixture should be smooth and uniform in color, with no streaks of mustard visible.

This base provides the creamy foundation and initial tang that defines the sauce. I find that using a whisk rather than a spoon ensures thorough blending and a lighter texture. The vinegar and lemon juice will slightly thin the mayonnaise, which is exactly what you want at this stage.

Step 2: Incorporate the Cream of Tartar

Add the 1 tbsp Cream of Tartar to the wet mixture. Whisk vigorously for 30-45 seconds until the cream of tartar is completely dissolved. You’ll notice the mixture thicken slightly as this acid reacts with the mayonnaise emulsion.

Cream of tartar is the signature ingredient here—it delivers that distinctive sharp tang that separates this sauce from ordinary tartar variations. Ensure there are no visible granules remaining before moving to the next step, as undissolved cream of tartar will create an unpleasant texture.

Step 3: Fold in Herbs and Seasonings

Gently fold in the 2 tbsp Capers (drained and chopped), 2 tbsp Fresh Dill (finely chopped), and 1 tbsp Fresh Parsley (finely chopped) using a silicone spatula. This preserves the texture of the herbs while evenly distributing them throughout the sauce.

The capers add a briny pop, while the fresh herbs contribute brightness and color. I prefer flat-leaf parsley for its cleaner flavor, but curly parsley works in a pinch. Distribute the herbs uniformly so every bite contains their fresh, vibrant notes.

Step 4: Add Powders and Final Adjustments

Sprinkle the 0.5 tsp Garlic Powder and 0.5 tsp Onion Powder over the surface of the sauce. Fold gently to combine, ensuring the powders dissolve completely without overmixing, which could break the emulsion.

These powders provide subtle depth without overpowering the sauce’s bright, tangy profile. Taste the sauce now—it should have a perfect balance of creamy richness, sharp acidity, and herbal freshness. If it tastes too thick, you can thin it slightly with a teaspoon of water, though I find this rarely necessary with these proportions.

Transfer to an airtight container and refrigerate for at least 1 hour to allow the flavors to meld. The sauce will keep in the refrigerator for up to 5 days, though it’s best enjoyed within 48 hours for peak freshness.

Best Sauces and Condiments for This Dish

Classic Pairings

This sauce shines brightest with crispy fried fish like beer-battered cod or haddock. The tangy zip cuts through the richness of fried foods beautifully. I also love it with grilled shrimp skewers—the acidity complements the sweetness of the seafood perfectly.

Unexpected Uses

Try spreading it on toasted sourdough for a tangy seafood sandwich. It also works surprisingly well as a dip for crudité platters or as a dressing for potato salad. The briny capers add a sophisticated touch to simple dishes. 💡

Sauce Variations

For a spicy kick, add ½ tsp cayenne pepper or a dash of hot sauce. A sweet-tangy twist comes from mixing in 1 tbsp honey or maple syrup. These small tweaks can transform the sauce for different moods.

Beverage Matches

A crisp lager beer like Pilsner Urquell pairs wonderfully, as do dry white wines such as Sauvignon Blanc. The acidity in both complements the sauce’s tang. For non-alcoholic options, sparkling lemonade works beautifully. 🍷

Storage Tips

Store in an airtight container in the fridge for up to 5 days. The flavors deepen after 24 hours, so making it ahead is ideal. Stir before using, as the herbs may settle at the bottom.

Serving Temperature

Serve chilled for the best texture and flavor balance. If it thickens too much after refrigeration, thin it with 1-2 tsp cold water and stir well. This keeps the consistency perfect for dipping or spreading. ✨

Frequently Asked Questions