Name: Mary Berry Potato Salad Recipe
Prep time: 10 min
Cook time: 25 min
Total time: 40 min
Ingredients: 800g waxy potatoes such as Charlotte or Jersey Royals, scrubbed; 1 tsp fine sea salt for the cooking water; 150g full-fat mayonnaise; 75g soured cream; 1 tbsp wholegrain mustard; 1 tsp white wine vinegar; 1 tsp caster sugar; half tsp fine sea salt; quarter tsp ground black pepper; 4 spring onions, finely sliced; 2 tbsp fresh chives, finely snipped; 1 tbsp fresh flat-leaf parsley, roughly chopped; 2 tsp capers, drained and roughly chopped, optional

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This Mary Berry potato salad is a creamy, well-seasoned dish built on tender waxy potatoes coated in a tangy, herb-flecked dressing that clings to every surface without turning heavy or stodgy. The balance of sharpness from the mustard and brightness from the spring onions keeps each bite lively rather than rich.

What sets this version apart is its straightforward method and reliable results, making it well suited to everything from a summer garden spread to a midweek meal alongside grilled fish or cold roast chicken. The potatoes hold their shape beautifully rather than breaking down into a mash. From start to finish, it is ready in around 40 minutes.

Ingredients

For the potatoes

800g waxy potatoes (such as Charlotte or Jersey Royals), scrubbed
1 tsp fine sea salt, for the cooking water

For the dressing

150g full-fat mayonnaise
75g soured cream
1 tbsp wholegrain mustard
1 tsp white wine vinegar
1 tsp caster sugar
Half tsp fine sea salt
Quarter tsp ground black pepper

To finish

4 spring onions, finely sliced
2 tbsp fresh chives, finely snipped
1 tbsp fresh flat-leaf parsley, roughly chopped
2 tsp capers, drained and roughly chopped (optional)

How to Make Mary Berry Potato Salad Recipe

Prepare the potatoes: Place the scrubbed potatoes in a large saucepan and cover with cold water. Add the salt and bring to the boil over a high heat, then reduce to a steady simmer. Cook for 18 to 22 minutes until a sharp knife slides through the centre of the largest potato without resistance.
Drain and cool slightly: Tip the potatoes into a colander and leave for 5 minutes until cool enough to handle but still warm. Starting with warm potatoes allows the dressing to absorb more evenly rather than sitting on a cold surface. Halve any larger ones so all pieces are roughly the same size.
Mix the dressing: In a large mixing bowl, combine the mayonnaise, soured cream, wholegrain mustard, white wine vinegar, caster sugar, salt, and black pepper. Stir together until smooth and fully combined with no visible streaks of either cream or mayonnaise.
Dress the potatoes: Add the still-warm potato pieces to the bowl of dressing and fold gently using a large spoon or spatula, turning them until every surface is coated. Avoid stirring vigorously, as this can break the potatoes apart and make the salad appear rough rather than clean and cohesive.
Add the aromatics: Scatter in the sliced spring onions, snipped chives, chopped parsley, and capers if using. Fold through once more with a light hand so the herbs are evenly distributed without bruising.
Rest before serving: Leave the dressed salad to stand for at least 10 minutes before serving. This short resting time allows the flavours to settle and the dressing to thicken slightly as it cools, giving a more rounded, unified result on the plate.

Tips for the Best Mary Berry Potato Salad

Why does my potato salad turn watery after a while?

Watery salad is almost always caused by dressing potatoes after they have fully cooled and released surface moisture. Dress them while still slightly warm so the dressing bonds with the surface rather than pooling at the bottom of the bowl.

How do I stop the potatoes from breaking up when I mix them?

Use a large, wide bowl so you have room to fold rather than stir. A gentle folding motion with a broad spatula keeps the potato pieces intact, especially if using a floury variety by mistake.

Why does my dressing taste flat even when I follow the quantities?

Seasoning fades as the salad sits and the potatoes absorb salt. Taste the finished salad just before serving and adjust with a small pinch of salt or a few drops of white wine vinegar to lift the flavour back to the right level.

How do I get the herbs to stay bright green rather than wilting?

Add the fresh herbs in the final fold, not while the potatoes are still hot. Heat causes herbs to wilt and discolour quickly, so waiting until the mixture has cooled to a warm rather than hot temperature preserves their colour and fresh aroma.

Why do my potatoes turn slightly gluey in the salad?

Gluey texture comes from using a floury potato variety such as Maris Piper, which breaks down during cooking. Stick to waxy varieties like Charlotte or Jersey Royal, which hold a firm, slightly dense structure after boiling and maintain clean edges when cut.

Serving Suggestions

Serve alongside cold roast chicken and a simple green salad for a relaxed summer lunch.
Spoon next to grilled salmon fillets with a wedge of lemon for a light evening meal.
Pair with sliced cold cuts such as honey-roast ham or rare beef at a buffet spread.
Plate with pickled gherkins and a sharp cheddar for a ploughman’s-style lunch.
Serve as part of a barbecue spread alongside grilled sausages and corn on the cob.

Storage

Room Temperature

Keep the salad at room temperature for no longer than 2 hours, particularly in warm weather, as the mayonnaise-based dressing spoils quickly outside of refrigeration.

Refrigerator

Transfer to an airtight container and refrigerate for up to 3 days. Before serving, allow the salad to sit at room temperature for 15 to 20 minutes, as the cold thickens the dressing considerably and mutes the flavour of the herbs.

Freezing

This salad is not suitable for freezing. Mayonnaise-based dressings split and separate on thawing, and waxy potatoes develop a grainy, waterlogged texture once frozen and defrosted.

Nutrition

Calories: 310 kcal
Carbohydrates: 32g
Protein: 4g
Fat: 18g
Saturated Fat: 4g
Sodium: 420mg

Nutrition values are estimates and may vary depending on the specific ingredients used and serving size.

FAQs

Can I use Greek yogurt instead of soured cream in this recipe?

Yes, full-fat Greek yogurt works as a straightforward swap for soured cream and gives a slightly sharper, lighter finish to the dressing. Avoid low-fat versions, as they can turn the dressing thin and loose.

Can I make this potato salad the night before?

It can be made up to 24 hours ahead and kept covered in the fridge. Stir gently before serving and add a fresh handful of snipped chives to brighten the colour and flavour, as herbs soften overnight in the dressing.

Can I use new potatoes instead of Charlotte potatoes?

New potatoes are an excellent choice. They are naturally waxy, hold their shape well after boiling, and have a thin skin that does not need peeling, which saves time and adds a slightly earthy flavour to the finished salad.

Can I double this recipe for a large gathering?

The recipe scales up easily. Double all quantities and use your largest mixing bowl to ensure you have enough room to fold the potatoes without breaking them. Keep the resting time the same before serving.

Is this potato salad suitable for vegetarians?

Yes, the recipe as written contains no meat or fish. Check the label on your mayonnaise if serving to strict vegetarians, as some commercial varieties contain trace animal products in the emulsifiers used.

Conclusion

This Mary Berry potato salad delivers a well-balanced, creamy side dish with a clean finish that works across a wide range of occasions, from casual weeknight dinners to summer gatherings and buffet tables. The mustard-laced dressing, combined with fresh spring onions and herbs, gives each potato piece a flavour that is sharp and herby without being overpowering. The recipe makes approximately 4 to 6 servings as a side dish, depending on what it is served alongside.

Once the method is familiar, the timings become second nature and the results are consistent every time. If this recipe has been useful, feel free to share it with friends or leave a comment below with any variations that have worked well. If you enjoyed this, you might also like the Mary Berry Light Farmhouse Fruit Cake Recipe for another reliable classic from the same trusted kitchen tradition.