Here's a pretty and delicious salad to brighten up the winter months.
To make the vinaigrette, combine the vinegar, salt, mustard, and walnut oil in a small glass jar with a lid and shake vigorously to combine. Let the dressing sit at room temperature for at least 30 minutes before using. The vinaigrette may be made in advance and kept refrigerated for up to 3 weeks.
Place the greens in a medium-size bowl and toss with half of the vinaigrette to coat the leaves. Taste and add more dressing as desired. Divide the greens among 4 plates. Top each serving with some of the persimmon slices, walnuts, and dates. Lightly sprinkle a pinch of sea salt atop each salad and serve immediately.