This bright and crispy radish salad with Parmesan is the perfect healthy salad for spring when radishes are at their peak.
Whisk vinegar, shallot, mustard and salt together in a large bowl. Slowly drizzle in oil, whisking constantly. Add radishes and celery; toss to combine. Gently fold in parsley and Parmesan. Let stand at room temperature until the flavors meld, about 15 minutes.