Potato Salad

• 2 lbwaxy potatoes · Yukon Gold or red-skinned
• 2 tbspwhite wine vinegar
• 3/4 cupGreek yogurt
• 2 tbspmayonnaise
• 1 tbspDijon mustard
• 1 tspwholegrain mustard
• 1/2lemon · juiced
• 3spring onions · thinly sliced
• 2celery stalks · diced
• 1dill pickle · diced
• 2 tbspfresh dill · chopped
• 2 tbspchives · chopped
• kosher salt · to taste
• black pepper · to taste

Method

1. 1

   Choose waxy potatoes, not floury ones

   The variety decides whether you get distinct, creamy chunks or a bowl of mash pretending to be salad. Waxy potatoes, Yukon Gold, red-skinned, new potatoes, or fingerlings, are low in starch and high in moisture, so they hold their shape after cooking and slicing and give you that clean bite a good potato salad needs. Floury bakers like Russets are the opposite: they are lovely roasted or mashed, but in a salad they crumble and go grainy as soon as you dress them. If you can only find one type, reach for Yukon Gold, which is the most forgiving all-rounder and stays creamy without falling apart.

2. 2

   Cook them whole in well-salted water

   Cut potatoes leak starch and soak up water at every exposed edge, which is how salads turn gluey and waterlogged, so cook them whole in their skins whenever the potato is small enough. Start them in cold, generously salted water, a good tablespoon of salt, and bring them up to a simmer together so they cook evenly from the outside in rather than blasting the outsides while the middles stay raw. Salting the water is your only chance to season the potato itself all the way through, so do not be shy. If your potatoes are large, halve them, but keep the pieces as big as you sensibly can.

3. 3

   Cook to just-tender, then drain and steam-dry

   Test with the tip of a knife: it should slide in with only slight resistance, tender but not falling apart, usually fifteen to twenty minutes at a gentle simmer depending on size. Overcooked potatoes disintegrate the moment you stir in the dressing, so pull them a touch early rather than late. Drain them well in a colander and let them sit for a few minutes so the surface steam-dries; a dry potato grips dressing, a wet one dilutes it. A rolling boil batters the potatoes against each other and breaks the edges, so keep the water at a lazy simmer throughout.

4. 4

   Season with vinegar while the potatoes are still warm

   This is the step that makes people ask what your secret is. As soon as the potatoes are drained and just cool enough to handle, cut them into bite-size chunks and toss them with a couple of tablespoons of vinegar, white wine, apple cider, or plain white, plus a little salt and pepper. Warm potatoes are porous and drink the vinegar deep into the flesh, seasoning them from the inside rather than leaving all the tang on the surface. Skip this and dress cold potatoes, and the salad tastes flat no matter how good the dressing is. Let them cool with the vinegar on before the creamy dressing goes anywhere near.

5. 5

   Build a lighter creamy dressing on Greek yogurt

   The heaviness of classic potato salad comes from a full load of mayonnaise, and you can keep the creaminess while dropping most of it. Whisk together a base that is mostly thick Greek yogurt with just a spoon or two of mayonnaise for its particular richness, then sharpen it with Dijon and a little wholegrain mustard, a squeeze of lemon, salt, and black pepper. The yogurt brings tang and body along with a hit of protein, the mustard carries the flavour, and you end up with a dressing that clings and coats without the greasy weight. Taste and adjust; it should read a touch too sharp on its own, because the bland potatoes will pull it back into balance.

6. 6

   Add crunch, allium, and plenty of fresh herbs

   Texture and freshness are what lift potato salad above stodge. Fold in thinly sliced spring onions or a little finely diced red onion for bite, chopped celery or a diced dill pickle for crunch, and a generous handful of fresh herbs, dill and chives are the classic pairing, with parsley a good all-rounder. A spoon of the pickle brine or a little chopped caper adds another layer of acidity that keeps everything bright. Season as you go, because potatoes are hungry for salt. This is the same principle that makes a good broccoli salad work: a creamy base needs sharp, crunchy, herby things running through it.

7. 7

   Fold gently and rest before serving

   Combine the dressed, cooled potatoes with the dressing and add-ins using a folding motion and a flexible spatula rather than vigorous stirring, which smashes the edges and turns the salad cloudy. You want the chunks coated and intact. Then, crucially, give it at least an hour in the fridge before serving; the rest lets the flavours marry and the potatoes finish absorbing the seasoning, and it is genuinely better after that time than straight away. Taste again just before serving and correct the salt and acid, because chilling dulls both and cold potato salad almost always needs a final adjustment.

8. 8

   Keep it food-safe at the table

   Potato salad has a reputation as a picnic hazard, and the fix is simple handling rather than avoiding it. A yogurt-based dressing is no more or less risky than mayonnaise; the real issue is time in the warmth. Keep the salad refrigerated until you serve it, and do not leave it sitting out for more than about two hours, or one hour if it is a hot day above ninety degrees. For a long barbecue, nest the serving bowl in a larger bowl of ice to keep it cold, and refrigerate leftovers promptly. Stored properly it keeps three to four days and, like many dressed salads, often tastes best on day two.