Hold the mayo. Replace the usual creamy potato salad dressing with this lively lemon-dill vinaigrette. Easy to make and easy to transport, you will love this fresh take on the picnic staple. If you are taking this to a party, chill the cooked potatoes in the dressing for 30 minutes, and then assemble the salad (with the green beans, radishes, chives, and remaining dressing) on a platter just before serving. Haricots verts are slender green beans. If you can’t find them, feel free to use sugar snap peas or snow peas. Cook them for one minute, along with the potatoes. You can make the lively lemon-dill vinaigrette ahead of time and store it in a Mason jar in the refrigerator. Shake it well before using. Serve this at your next outdoor barbecue or picnic and you won’t even miss the traditional potato salad covered in the mayonnaise dressing. Leftover salad is great served with cold chicken or a ham sandwich.