Dill Mustard Potato Salad

A creamy, tangy dill mustard potato salad featuring perfectly tender potatoes, fresh dill, and a sharp Dijon dressing.

Why This Recipe Works:

• Acid absorption at peak temperature ensures every bite is seasoned from the inside out, not just coated on the surface.
• A hybrid dressing of mayonnaise and sour cream prevents the heavy, cloying texture of pure mayo while keeping it incredibly creamy.
• Fresh dill and whole-grain Dijon mustard add essential texture and a sharp, herbaceous contrast to the earthy potatoes.

I still remember the humid July afternoon when my aunt's plastic bowl of potato salad melted slightly against the edge of a hot charcoal grill.

I took one bite of the lukewarm, gluey mess and quietly gagged behind a hydrangea bush.

Most backyard potato salads are absolute disasters because home cooks boil their potatoes until they are structurally compromised, then drown them in warm mayonnaise while they are still steaming, which causes the emulsion to break and turn into a greasy, oily swamp.

While I adore a classic French Onion Potato Salad, this dill-forward version is what I crave when the weather gets truly sweltering.

Trust me on this one: the secret is a splash of vinegar on hot potatoes.

By tossing the warm, freshly drained potatoes with a splash of pickle juice or white vinegar, you allow the starch molecules to absorb the acidity deep into their core before the dressing even touches them.

It is a game-changer.

If you love potato sides, you might also enjoy our decadent Potatoes Romanov or these ultra-crispy Crispy Wedges.

Dill Mustard Potato Salad

• Publisher Storied Skillet
• Cuisine American
• Category Side Dishes, Salad
• Prep Time 15 mins
• Cook Time 15 mins
• Servings 6
• Calories 240 calories
• Rating 4.8 4752
• Tags potato salad, dill potato salad, mustard potato salad, summer side dish

Ingredients

• 2 lbs Yukon Gold potatoes, scrubbed and cut into 1-inch chunks
• 1 tablespoon Diamond Crystal kosher salt (for boiling water)
• 2 tablespoons pickle juice (or white wine vinegar)
• 1/2 cup mayonnaise
• 1/4 cup sour cream
• 2 tablespoons Dijon mustard
• 1 tablespoon whole-grain mustard
• 1/2 cup finely chopped fresh dill
• 1/2 cup finely diced celery
• 1/4 cup finely diced red onion
• Freshly cracked black pepper to taste

Directions

1. Place the potato chunks in a large pot and cover with cold water by at least an inch, then add the Diamond Crystal kosher salt.
2. Bring to a boil over high heat, then reduce to a gentle simmer and cook for 10 to 12 minutes until the potatoes are easily pierced with a paring knife.
3. Drain the potatoes thoroughly in a colander and let them steam dry for exactly two minutes to remove excess surface moisture.
4. Transfer the warm potatoes to a large bowl, immediately drizzle the pickle juice over them, and gently toss with a rubber spatula before letting them cool for 15 minutes.
5. In a separate medium bowl, whisk together the mayonnaise, sour cream, Dijon mustard, whole-grain mustard, chopped dill, celery, and red onion.
6. Pour the dressing over the cooled potatoes and fold gently with your spatula until the potatoes are evenly coated, being careful not to mash them.
7. Cover the bowl tightly and refrigerate for at least 2 hours before serving to let the flavors meld together beautifully.

Notes

• I highly recommend using Diamond Crystal kosher salt for boiling; if you only have Morton's, use half the volume (1.5 teaspoons instead of 1 tablespoon) to avoid over-salting.
• Yukon Gold potatoes are ideal here because their medium-starch content holds its shape beautifully while still releasing just enough starch to bind with the dressing, unlike russets which disintegrate into mush.
• Do not let your potatoes cool completely before adding the acid; the starch gelatinization process makes warm potatoes highly receptive to absorbing liquids, whereas cold potatoes will just let the vinegar pool at the bottom of the bowl.
• After a day in the fridge, the potatoes will absorb some of the moisture from the dressing, making the salad taste even richer and more cohesive, though you may want to stir in a tiny splash of milk or extra sour cream to loosen it up before serving.

Serving Suggestions

This salad is the ultimate companion for outdoor cookouts and casual dinners. It pairs beautifully with smoky, charred meats and crisp summer greens.

• Serve alongside a rack of slow-cooked ribs or grilled burgers.
• Pair with a fresh, crunchy Dill pickle coleslaw to double down on the herbaceous, tangy summer vibes.
• Spoon it onto a platter next to grilled chicken skewers for an easy backyard feast.
• Serve chilled in a classic ceramic bowl, garnished with extra sprigs of fresh dill and a pinch of smoked paprika.

Storage and Reheating

Keep this salad cold.

Store any leftovers in an airtight container in the refrigerator for up to four days. Because of the mayonnaise and sour cream base, it should never be left out at room temperature for more than two hours.

Do not freeze this potato salad. The freezing process breaks the emulsion of the dressing and turns the potatoes into a watery, spongy mess upon thawing.

Before serving leftovers, give the salad a gentle fold with a spatula. If it looks a bit dry after absorbing the dressing overnight, fold in a single teaspoon of sour cream to restore its glossy, creamy texture.

Ingredient Substitutes

If you find yourself missing an ingredient, here are the best ways to pivot without sacrificing flavor or texture.

1. Yukon Gold Potatoes: Red potatoes work wonderfully as a direct substitute because they also hold their shape well after boiling. Avoid russet potatoes unless you want a texture closer to mashed potatoes.
2. Sour Cream: You can swap this out for plain Greek yogurt to add a bit of extra tang and protein, though it will taste slightly sharper.
3. Pickle Juice: If your pickle jar is empty, white wine vinegar or fresh lemon juice will provide that essential acidic kick to season the warm potatoes.
4. Whole-Grain Mustard: Yellow mustard can be used in a pinch, but reduce the amount by half as its flavor is much more aggressive and lacks the pleasant texture of whole mustard seeds.

I hope this recipe saves you from the tragedy of gluey, bland potato salads forever. It has become my absolute go-to for every summer gathering, and I promise your friends will be scraping the bowl clean. Happy cooking!