Ingredients
3 pounds unpeeled whole mixed new potatoes
Kosher salt and freshly ground pepper
2 tablespoons red-wine vinegar
2 tablespoons fresh lemon juice, plus 1/2 teaspoon grated lemon zest
3/4 cup extra-virgin olive oil
1/2 cup finely chopped sweet onion
1/2 cup roughly chopped fresh parsley leaves
1/2 cup roughly chopped celery leaves
1 tablespoon chopped fresh oregano
Preparation
In a large pot, cover potatoes with 2 inches water and season generously with salt. Bring to a boil, then reduce heat to medium-high and continue boiling until potatoes are fork-tender, about 9 minutes. Drain, transfer to a bowl, and lightly smash. Toss with vinegar, lemon juice and zest, and oil; season with salt and pepper. Let cool completely, about 30 minutes.
Stir in onion, parsley, celery leaves, and oregano. Season with salt and pepper. Serve, or refrigerate in an airtight container up to 1 day (bring to room temperature before serving, about 30 minutes).
