4 ½ tablespoons
extra-virgin olive oil, plus more for greasing
1 teaspoon
kosher salt
⅔ cup
mayonnaise
1 tablespoon
stone ground mustard
1 ½ tablespoons
pickle juice
Freshly cracked black pepper, to taste
2 tablespoons
finely chopped fresh chives
2 tablespoons
finely chopped fresh Italian parsley
1 cup
diced Persian cucumbers, (from 2 to 3 cucumbers)
¾ cup
diced pickles
4
Hard Boiled Eggs, roughly chopped
4
radishes, thinly sliced
Method
Preheat the oven to 450°F with a rack in the center position. Grease a rimmed sheet pan with olive oil.
Bring a large pot of salted water to a boil over high heat. Add the potatoes and cook until very tender, about 20 minutes. Strain the potatoes in a colander and let cool for about 5 minutes.
Spread out the potatoes on the prepared sheet. Using the bottom of a drinking glass, gently smash the potatoes until each is about ¼ inch thick. Drizzle with 2 tablespoons of the olive oil all over the potatoes and season them with ½ teaspoon of the salt.
Bake the potatoes until crispy, about 25 minutes. Transfer to a cutting board, let cool for 10 minutes then roughly chop. Transfer to a large bowl.
Meanwhile, in a small bowl combine the mayonnaise, the remaining 2½ tablespoons olive oil, mustard, pickle juice, the remaining ½ teaspoon salt, and pepper.
Add the chives, parsley, cucumbers, pickles, eggs, and radishes to the bowl with the potatoes. Stir in the dressing and mix until well combined and coated.