Preparation Whisk together lemon juice, mustard, sugar, and 1/2 teaspoon salt in a large bowl until salt and sugar are dissolved, then add oil in a slow stream, whisking until emulsified. Add greens to dressing and toss to coat. Serve immediately.
Preparation Whisk together lemon juice, mustard, sugar, and 1/2 teaspoon salt in a large bowl until salt and sugar are dissolved, then add oil in a slow stream, whisking until emulsified. Add greens to dressing and toss to coat. Serve immediately.