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Potato Salad with Mustard Sauce and Watercress

5.0

(1)

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Photo by Alex Lau, Styling by Sue Li

Peewee Dutch Yellow Potatoes are the perfect tiny potato for this recipe, but if you can’t find them, just use the smallest fingerling or Yukon Gold potatoes you can buy.

Recipe information

  • Yield

    4 servings

Ingredients

1¼ pounds peewee, peanut, or baby potatoes (as small as possible), scrubbed
Kosher salt
2 tablespoons apple cider vinegar
2 tablespoons Dijon mustard
2 tablespoons whole grain mustard
2 tablespoons chopped dill pickles
1 tablespoon pickle brine
2 tablespoons chopped dill, plus more for serving
Freshly ground black pepper
2 cups trimmed watercress
Olive oil (for drizzling)

Preparation

  1. Step 1

    Place potatoes in a large pot and cover with cold water. Throw in a palmful of salt and bring to a boil. Reduce heat and simmer until fork-tender, 15–20 minutes. Drain, then let cool slightly (the potatoes should be warm when you dress them, which will help them soak up the flavors).

    Step 2

    Meanwhile, mix vinegar, Dijon mustard, whole grain mustard, pickles, pickle brine, and 2 Tbsp. dill in a large bowl.

    Step 3

    Slice potatoes in half and transfer to bowl with vinegar mixture; season with salt and pepper and toss to coat. Let cool.

    Step 4

    Add watercress and toss to coat. Top with more dill, a good drizzle of oil, and more pepper.

    Step 5

    Do Ahead: Potato salad, without watercress, can be made 1 day ahead. Cover and chill.

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