apple cider vinegar or white wine vinegar
sunflower or safflower oil
medium red radishes, halved and thinly sliced (about 4 radishes)
medium celery ribs, thinly sliced crosswise on the diagonal (about 3 stalks)
small fennel bulb, halved, cored, and cut into bite-size pieces
kosher salt and freshly ground pepper
In This Recipe
In a large pot, cover the potatoes with water and bring to a boil over high heat. Reduce the heat to medium and simmer until tender, about 15 minutes. Drain and let cool.
In a large bowl, whisk together the vinegar, mustard, and oil. Add the radishes, celery, and fennel. Slice the potatoes into rounds (removing the peel if you prefer) and add to the bowl. Stir together and season the salad with salt and pepper. Fold in the dill. Serve immediately or refrigerate for up to 1 day.