Mary Berry Prawn Cocktail is a timeless British starter that brings 1970s charm to a modern table. This elegant recipe pairs 300g of cooked peeled North Atlantic prawns with two ripe avocados for a creamy, fresh finish.
Quick to assemble and pleasing to guests, this dish suits a festive gathering or a simple Sunday lunch. A squeeze of lemon lifts the flavours and helps balance the richness.
Simple, elegant and reliably delicious, the prawn cocktail shows how quality ingredients make a small starter feel special. Follow the steps and you will serve a classic that remains popular in British kitchens.
Key Takeaways
- The Mary Berry version updates a 1970s classic with avocado for extra creaminess.
- Use 300g of cooked peeled North Atlantic prawns for the best texture.
- A dash of lemon brightens the sauce and balances richness.
- It’s quick to prepare and ideal for casual or formal occasions.
- The recipe remains a reliable choice that celebrates fresh, simple flavours.
The Timeless Appeal of a Mary Berry Prawn Cocktail
The charm of this prawn cocktail lies in its skill at turning modest ingredients into a memorable starter.
Simple ingredients—fresh prawns, ripe avocado and a silky sauce—combine to make a light, elegant dish that suits any dinner.
Unlike heavier mains such as roast chicken or trays of roast potatoes, this starter refreshes the palate before larger courses.
“Classic recipes remain popular because they balance flavour and ease; this starter does both with style.”
Home cooks often find inspiration in mary berry’s recipes, and this prawn cocktail is a go-to for many hosting occasions.
| Feature | Why it Works | When to Serve |
|---|---|---|
| Light texture | Chilled prawns and creamy sauce balance richness | Starter for formal or casual dinner |
| Quick to assemble | Minimal prep, impressive result | Good for entertaining |
| Tradition | Rooted in British classic recipes | Holiday meals or simple suppers |
In short, serving this dish connects you to a long culinary tradition while keeping the menu fresh and satisfying.
Essential Ingredients for Your Starter
Choosing the right produce and pantry staples sets you up for a flawless classic starter.
Fresh Produce Selection
Freshness matters: use 300g of cooked peeled North Atlantic prawns and two ripe medium avocado for cream and texture.
Add an 85g bag of mixed lettuce leaves or a crisp Little Gem for crunch. Include ripe tomato and a lemon for brightening the flavours.
Keep six large shell-on cooked king prawns to garnish; they lift presentation in the home kitchen.
Pantry Staples
For the sauce, measure 8 tbsp mayonnaise, 6 tbsp ketchup, 1.5 tsp tomato purée and 2 tbsp creamed horseradish.
Season with 1 tsp Worcestershire sauce, a dash of sugar, salt, freshly ground black pepper and a pinch of cayenne pepper.
Always dry the prawns thoroughly before tossing them in a large bowl so the sauce stays thick. You can swap in chicken or other proteins if you try different recipes.
Preparing the Perfect Marie Rose Sauce
A creamy, tangy Marie Rose brings clarity and punch to chilled seafood without fuss.
To make the signature sauce, put 8 tbsp of mayonnaise and 6 tbsp of ketchup into a large mixing bowl. Whisk until smooth and fully emulsified so the texture will coat the prawns evenly.
Add 1.5 tsp of tomato purée and 1 tsp of Worcestershire sauce to deepen the savoury notes. Stir in the juice of 0.5 lemon, a dash of sugar, then season with salt and pepper to taste.
Finish with a pinch of cayenne pepper for subtle heat. The mixture should be thick enough to cling to seafood but still spoonable. If it seems too stiff, loosen it with a little extra lemon juice.
Tip: The sauce made can rest in the fridge for up to three days. Resting lets flavours meld and makes assembly quicker on the day you serve the dish.

- Whisk mayonnaise and ketchup in a bowl until smooth.
- Fold in tomato purée, Worcestershire sauce, lemon juice, sugar, salt, pepper and cayenne.
- Taste and adjust; refrigerate up to 3 days.
Selecting and Cleaning Your Prawns
Good prawns make this starter: pick firm, cold prawns and treat them gently. Start with 300g of high-quality cooked peeled prawns, drained and patted dry. This prevents the sauce from thinning and keeps texture bright.
Handling King Prawns
Use six large shell-on cooked king prawns as a garnish. Remove shells carefully, keeping the tail intact to lift presentation.
If using frozen produce, fully defrost and pat dry with kitchen paper. Toss the prawns with the juice of one lemon to brighten flavour and help preserve freshness.
- Keep prawns cold until you add them to the sauce.
- Fold prawns gently into the dressing so they stay plump and do not break.
- Serve on a crisp Little Gem leaf for contrast in texture.
“Choose quality and handle with care to let simple flavours shine.”
Choose the best options from your fishmonger or supermarket. With these steps, every prawn in your dish will be perfectly prepared and ready to impress.
Assembling the Dish for Maximum Impact
Careful layering in clear glasses reveals the salad’s vibrant contrasts and promises a tasty bite.
Start by dividing shredded lettuce between six individual glasses or a single glass bowl. Add the diced avocado on top so each portion gets a creamy base.
Spoon the prawn and sauce mixture evenly over the avocado. Take care to distribute the prawns so every glass has an equal portion of flavour and texture.
Garnish each serving with one of the reserved large king prawns and a small wedge of lemon on the side. A light grind of pepper and a thin slice of tomato lift the presentation.
Serve immediately with a slice of buttered brown bread. The fresh bread makes a great side and balances the tangy, citrus notes in the mixture.
Tip: assemble at the last minute to keep lettuce crisp and prawns chilled for the best serving.
Expert Tips for a Professional Finish
Professional results come from timing and small adjustments rather than complex skills. Follow a few clear rules to keep the dish bright, clean and balanced at the table.

Achieving the Right Consistency
Whisk the mayonnaise and ketchup until smooth before you add the lemon juice. This prevents splitting and gives the sauce a glossy, clingy texture that coats prawns well.
If the sauce is too thick, add a splash of lemon juice. If it feels thin, chill it for a few minutes to let it firm up.
Keeping Lettuce Crisp
Wash leaves in cold water and dry completely. Use a salad spinner or kitchen towel so lettuce stays crunchy under the sauce.
Assemble at the last minute and keep the kitchen cool to stop wilting during preparation.
Balancing Flavours
Adjust lemon juice and cayenne pepper carefully; the citrus should lift the mayonnaise without overpowering it. A tiny pinch of cayenne pepper adds warmth and depth.
“Chill the finished dish for 10 minutes before serving for a professional finish.”
- Dry prawns well to prevent watery sauce.
- Keep the mayonnaise stable by avoiding high heat while assembling.
- Serve on the side of a larger meal to provide a refreshing contrast.
Creative Variations to Try at Home
Experimenting with textures and heat gives the dish fresh appeal without fuss.
Try these easy twists to adapt the prawn cocktail for different tastes and occasions. Each idea keeps the spirit of the original while adding new interest.
- Add diced cucumber or extra tomato to the salad base for crunch and colour.
- Make a lighter sauce by swapping some mayonnaise for Greek yoghurt; use 1 tbsp yoghurt per 1 tbsp mayonnaise.
- For heat, mix chilli ketchup or a few drops of Tabasco into the ketchup and adjust by tsp to taste.
- Serve as a main with roasted new potatoes, sautéed potatoes or boiled potatoes for a heartier plate.
- Use baby gem lettuce or mixed leaves for different texture and a low‑carb option in lettuce cups.
- Brighten the prawn cocktail avocado pairing with a squeeze of lemon or lime and a scatter of fresh dill.
- For a smoky note, swap paprika for smoked paprika and keep crusty bread nearby to mop up the sauce.
Storage and Food Safety Guidelines
Proper chilling and quick assembly protect both flavour and food safety for your seafood starter.
Temperature Control
Always keep your prawn cocktail refrigerated at a safe temperature until the moment you begin serving. Cold storage preserves taste and prevents bacterial growth.
Never leave the dish at room temperature for more than 1 hour. A mayonnaise‑based sauce can spoil quickly when warm.
If you have leftovers, put them in an airtight container and refrigerate straight away. Consume within 24 hours for safety and best quality.
Avoid freezing the finished dish. Freezing will ruin the texture of the prawns and cause the sauce emulsion to break down.
When using freshly cooked prawns, cool them fully in the fridge before mixing with sauce. Set your refrigerator to 5°C or below to keep ingredients fresh.
- Do not reheat this starter — the mayonnaise will curdle and prawns will turn rubbery.
- Check smell and appearance before serving if it has been stored.
- Follow these steps to keep your Mary Berry‑inspired starter safe and delicious for guests.
Conclusion
Serve this prawn cocktail chilled in a clear glass to showcase bright lemon juice, crisp lettuce and the creamy sauce. The balance of tangy ketchup, mayonnaise and a pinch of cayenne pepper lets the prawns shine.
Dry the peeled prawns well, taste and adjust salt and pepper, and keep the sauce made in the fridge until assembly. Add tomato or a wedge of lemon for freshness and offer brown bread as a classic side.
Mary Berry fans and home cooks alike will find this dish quick to prepare and versatile. Whether in a glass for dinner or as a simple side, the recipe rewards care in the kitchen and invites creative twists.
FAQ
What key ingredients do I need for a classic Mary Berry prawn cocktail?
How do I make a light Marie Rose-style sauce?
What’s the best way to select and clean prawns?
Can I use avocado in the starter and how should it be prepared?
How do I achieve the right consistency for the sauce without overpowering the prawns?
What tips help keep lettuce crisp when assembling the dish?
How long can leftovers be kept and what are the storage rules?
Are there creative variations I can try at home?
How should I plate the dish for maximum impact?
Mary Berry Prawn Cocktail
A timeless British starter that brings 1970s charm to a modern table, featuring cooked peeled North Atlantic prawns and ripe avocados for a creamy finish.
Ingredients
- 300g cooked peeled North Atlantic prawns
- 2 ripe medium avocados
- 85g mixed lettuce leaves or 1 Little Gem lettuce
- 1 ripe tomato
- 1 lemon
- 6 large shell-on cooked king prawns (for garnish)
- 8 tbsp mayonnaise
- 6 tbsp ketchup
- 1.5 tsp tomato purée
- 2 tbsp creamed horseradish
- 1 tsp Worcestershire sauce
- 1 dash of sugar
- Salt to taste
- Freshly ground black pepper to taste
- Pinch of cayenne pepper
Method
- Whisk together the mayonnaise and ketchup in a large mixing bowl until smooth.
- Fold in the tomato purée, Worcestershire sauce, lemon juice, sugar, salt, pepper, and cayenne pepper.
- Dry the cooked prawns thoroughly and gently fold them into the sauce.
- Divide the shredded lettuce between six individual glasses or a single glass bowl.
- Add diced avocado on top of the lettuce.
- Spoon the prawn and sauce mixture evenly over the avocado.
- Garnish each serving with a reserved large king prawn and a small wedge of lemon.
- Serve immediately with a slice of buttered brown bread.
