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soured cream and Onion Potato Salad

This soured cream and onion potato salad is a refreshing twist on a classic vegetarian side dish, bringing together the tangy flavour of a favourite crisp variety with the comfort of tender baby potatoes. By boiling the potatoes in highly seasoned water and crushing them while warm, the interior absorbs the creamy dressing, ensuring every bite is packed with savoury punch. The addition of fresh chives and sharp red onion provides a bright contrast to the rich mayonnaise base.

Perfect for summer garden parties, weekend barbecues, or as a hearty lunch, this homemade salad benefits from a clever final touch of crumbled potato crisps for added texture. It is an easy, crowd-pleasing option that pairs beautifully with grilled vegetables or halloumi skewers. For the best result, serve it at room temperature to allow the mustard and garlic flavours to fully develop.

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Ingredients for soured cream and Onion Potato Salad

  • 900g baby Yukon Gold potatoes

  • 240ml kosher salt, plus more

  • 180ml soured cream

  • 60ml mayonnaise

  • 1 tablespoon onion powder

  • 2 teaspoons Dijon mustard

  • 1 teaspoon freshly ground black pepper

  • 1 garlic clove, finely grated

  • 1 bunch chives, thinly sliced, divided

  • 1/4 small red onion, very thinly sliced through root end

  • 120ml soured cream and onion crisps

Place potatoes in a large pot and pour in 3 qt. water to cover. Add 240ml salt and bring water to a boil over medium-high heat. (Yes, this is a lot of salt, but it’s the right amount to ensure potatoes are seasoned through and through.) Reduce heat and simmer, adjusting heat as needed, until potatoes until fork-tender, 15–20 minutes. Scoop out 120ml potato cooking liquid and set aside. Drain potatoes in a colander and let sit until cool enough to handle, about 10 minutes.

Meanwhile, combine soured cream, mayonnaise, onion powder, mustard, and pepper in a large bowl and mix well to combine. Add garlic and half of chives and mix just to incorporate.

Place red onion in a fine-mesh sieve and rinse for several seconds to take away some of its raw bite. Pat dry with paper towels. Mix half of onion into dressing; set aside remaining onion for serving.

Working one at a time, set potatoes on a flat surface and crush slightly with the palm of your hand. Add to bowl with dressing along with 60ml potato cooking liquid. Do this while the potatoes are still warm so that they can absorb all of the seasoning. Don't worry if the dressing looks a little loose and watery at the beginning—it will all get absorbed and become creamier as it sits. Taste and season with more salt or, if your dressing looks too thick, a splash of potato cooking liquid.

Top potatoes with remaining chives and reserved onion and crumble crisps over.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

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UK recipe editors

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UK recipe editors

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 28 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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