Prawn Cocktail Sauce Recipe: Zesty Tomato and Horseradish Kick

This prawn cocktail sauce elevates seafood platters with its bold, balanced flavor profile. I developed it after countless taste tests in my Boston apartment kitchen, refining the ratio of tangy to spicy until it was just right.

The combination of rich mayonnaise, bright ketchup, and sharp horseradish creates a zesty dip that complements prawns perfectly. A splash of lemon juice and Worcestershire sauce adds depth without overpowering the main ingredient.

What you get is a smooth, creamy sauce with a gentle heat that builds with each bite. It keeps well in the fridge for up to a week, making it ideal for meal prep or last-minute entertaining.

Serve chilled with cooked prawns, as part of a seafood board, or as a dip for crisp vegetables. This recipe delivers consistent, restaurant-quality results every time.

Ingredients for Prawn Cocktail Sauce

Eight ingredients blend into a zesty, smooth sauce perfect for seafood dipping.

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The mayonnaise base matters here. Duke’s or Hellmann’s give that rich, creamy texture you want—avoid the sweet salad dressing types. Horseradish is the star, so fresh refrigerated (not shelf-stable) has better punch. I grab mine at Whole Foods or the seafood counter at Market Basket. The ketchup should be thick, not watery—Heinz never lets me down.

No horseradish? Fresh grated ginger plus a dash of cayenne gets you close to that sharp bite. Need it milder? Halve the horseradish and add extra lemon. Swapping mayo for Greek yogurt works (tangier result). The Worcestershire adds complexity, but soy sauce in a pinch works—just reduce the salt. Always taste before serving—the heat mellows after an hour in the fridge.

Sauce keeps for 1 week in an airtight container. The flavors meld overnight, so make it a day ahead if possible. Stir before serving—it separates a bit. Not freezer-friendly (mayo breaks down).

Step-by-Step Instructions for Prawn Cocktail Sauce

Simple mixing with bold results—this comes together in minutes with perfect balance every time.

Step 1: Combine the Creamy Base

Start with the 1 cup Mayonnaise in a medium mixing bowl. I use full-fat for that luxurious texture—it makes the difference between good sauce and exceptional one. The mayonnaise provides the creamy foundation that will carry all those bold flavors.

At this stage, you want the mayonnaise at room temperature so it blends smoothly with the other ingredients. If it’s straight from the fridge, let it sit for 10 minutes first. This prevents the cold mayonnaise from seizing up when you add the acidic lemon juice.

Step 2: Add Tomato Depth and Zing

Measure out the 0.5 cup Ketchup and add it to the mayonnaise. Use a high-quality ketchup here—you’ll taste the difference. The ketchup brings that classic tomato tang that defines cocktail sauce, while its natural sweetness balances the heat and acidity.

Now add the 1 tbsp Lemon Juice. I always use freshly squeezed for the brightest flavor, but bottled works in a pinch. Stir these together with a whisk or fork until completely smooth. You’ll see the color lighten slightly as the ketchup distributes evenly through the mayonnaise.

Step 3: Layer in the Bold Flavors

Here’s where the sauce gets its signature kick. Add the 2 tbsp Prepared Horseradish—this is the star ingredient that gives cocktail sauce its characteristic bite. The amount here delivers a noticeable but not overpowering heat. If you’re sensitive to spice, start with 1 tbsp and taste as you go.

Next, stir in the 1 tsp Worcestershire Sauce and 0.5 tsp Hot Sauce. The Worcestershire adds a subtle umami depth, while the hot sauce enhances the horseradish’s spiciness. Watch how the sauce takes on a slightly darker hue as these ingredients meld together.

Step 4: Season and Adjust to Taste

Finish with the 0.25 tsp Salt and 0.125 tsp Black Pepper. I prefer fine sea salt for even distribution and freshly ground black pepper for maximum aroma. These seasonings might seem small, but they amplify all the other flavors in the sauce.

Give everything one final stir and let it sit for 5 minutes before serving. This brief rest allows the flavors to marry completely. Taste and adjust—if it needs more zing, add another squeeze of lemon; if it’s too sharp, a touch more ketchup will mellow it out. The sauce should be creamy, tangy, with a pleasant horseradish warmth that lingers.

Dietary Considerations for prawn cocktail sauce

Gluten-Free Friendly

This sauce is naturally gluten-free since the core ingredients—mayonnaise, ketchup, and horseradish—are typically free from gluten. However, always check your Worcestershire sauce label, as some brands contain barley malt. I use Annie’s or Lea & Perrins gluten-free versions to be safe. 💡

Dairy-Free Option

For a dairy-free version, simply ensure your mayonnaise is made without milk derivatives. Brands like Hellmann’s Vegan or Primal Kitchen work perfectly. The texture and flavor remain identical to the original recipe.

Low-Carb and Keto

This sauce fits well into low-carb diets with just 2g net carbs per tablespoon. The only carbs come from the ketchup and horseradish. For stricter keto, use sugar-free ketchup like G Hughes to reduce carbs further.

Shellfish Allergy Note

While this sauce contains no shellfish, cross-contamination can occur if you’re serving it with prawns. If allergies are severe, prepare the sauce in a separate area and use dedicated utensils. I always label it clearly at gatherings. 🦐

Vegan Adaptation

Swap the mayonnaise for a vegan alternative like Just Mayo or Vegenaise. The horseradish and other ingredients are already plant-based. The result is just as creamy and flavorful—my vegan friends can’t tell the difference.

Sodium Considerations

To reduce sodium, use low-sodium ketchup and Worcestershire sauce. You can also cut the added salt in half or omit it entirely. The horseradish and lemon still provide plenty of flavor without excess salt. 💛

Frequently Asked Questions