This salad is always a big hit at parties and picnics. It may seem an odd combination of items, but the results are crunchy, cool and delicious.
If you have leftovers, the salad will keep for 2 days in the refrigerator.
Combine the broccoli, celery, raisins, and sunflower seeds in a large bowl and stir to combine.
Make the dressing by whisking the remaining ingredients in a small bowl until smooth.
Add to the broccoli mixture and toss well. Refrigerate salad at least 2 hours before serving to allow flavors to mellow.