prep 15–20 min
cook 10–15 min + 30 min chill
serves 4–6 (side)
stove top
Place the halved purple fingerling potatoes in a large pot of salted boiling water. Cook until the potatoes are fork-tender, usually about 10-15 minutes. Drain the potatoes and let them cool to room temperature.
To make the vinaigrette, whisk together the olive oil, vinegar, mustard, garlic, salt, and pepper in a small bowl until combined. Taste and adjust the seasoning as needed. Set aside until ready to serve.
Once the potatoes have cooled, transfer them to a large mixing bowl. Pour the vinaigrette over the potatoes and gently toss to coat evenly. Add the parsley, chives, and dill and toss again. Taste and adjust for seasoning.
Refrigerate for at least 30 minutes to let the flavors meld. Serve.