- Add watercress, peas, and apple matchsticks to a large bowl.
- To make the scallion dressing, combine sour cream, olive oil, vinegar, sugar, chopped scallions, salt and pepper in a glass jar. Put lid on jar and shake to mix.
- Pour dressing over salad and toss to combine.
Watch the video below for some tips on keeping the kitchen clean as you prepare this salad.