900gwaxy or all-purpose potatoes (Yukon Gold or red potatoes)scrubbed
1tspfine saltfor the cooking water
3large hard-boiled eggscooled and peeled (optional)
90gdill picklesfinely diced (about 3–4 small dill pickles)
30mldill pickle brinefrom the jar
60gceleryfinely diced (about 2 small ribs)
40gred or yellow onionfinely diced
2green onionsthinly sliced (optional)
For the creamy mustard dressing
160gmayonnaise
60gsour cream or plain Greek yogurt
30mlyellow mustard
10mlDijon mustard
15mlapple cider vinegar or white wine vinegar
5mldill pickle brineadditional, plus more to taste
3gfine saltplus more to taste
1/4tspfreshly ground black pepper
1/4tspcelery seedoptional
1/4tspsmoked or sweet paprikaplus more for garnish (optional)
2tbspfresh dill or parsleychopped (optional)
Instructions
Boil the potatoes: Cut the potatoes into bite-size chunks (about 2–3 cm / 1 inch). Place in a large pot, cover with cold water by about 2.5 cm / 1 inch, and stir in 1 tsp fine salt. Bring to a gentle boil over medium-high heat.
Cook just until tender: Lower heat to maintain a steady simmer and cook 10–15 minutes, until a knife slides in with a little resistance and the edges are not falling apart.
Drain and steam-dry: Drain potatoes in a colander, return to the warm pot off the heat, and let sit uncovered 5 minutes to steam off excess moisture.
Splash with pickle brine while warm: Drizzle 30 ml / 2 tbsp pickle brine over the warm potatoes and gently toss. Let cool to slightly warm or room temperature before adding the creamy dressing.
Cook the eggs (if not already done): Place eggs in a small pot, cover with cold water, and bring to a boil. Once boiling, cover and reduce to a gentle simmer for 9–10 minutes. Cool in an ice bath or cold water, then peel and chop.
Prep the mix-ins: Finely dice the dill pickles, celery, and onion. Slice the green onions if using.
Whisk the dressing: In a medium bowl, whisk together mayonnaise, sour cream/Greek yogurt, yellow mustard, Dijon, vinegar, 5 ml / 1 tsp pickle brine, salt, pepper, celery seed (if using), and 1/4 tsp paprika. Taste and adjust with more brine, salt, or mustard as needed.
Combine potatoes and dressing: Put cooled potatoes in a large bowl. Add about two-thirds of the dressing and gently fold to coat without mashing. Add more dressing as needed for a creamy (not soupy) consistency.
Fold in pickles, celery, onion, and eggs: Add diced pickles, celery, onion, green onions, and chopped eggs. Fold gently until evenly distributed. Taste and adjust seasoning with salt, pepper, or pickle brine.
Chill to let flavors develop: Cover and refrigerate at least 1–2 hours (or up to 24 hours) to thicken slightly and deepen flavor.
Finish and serve: Stir gently, adding reserved dressing if needed. Garnish with extra paprika and chopped dill or parsley if using.