Preparation Stir together shallot and lime juice in a small bowl and let stand 5 minutes. Whisk in oil, sugar, and salt. Cut peel and any white pith from grapefruit with a sharp knife, then cut sections free from membranes. Toss mustard greens with dates in a large bowl. Just before serving, toss greens with dressing and salt to taste. Divide salad between 2 plates and top with grapefruit sections. Cooks' note:• Dressing, grapefruit sections, and greens can be prepared separately 4 hours ahead and chilled, covered. (Cover greens with a dampened paper towel and plastic wrap.)
Preparation Stir together shallot and lime juice in a small bowl and let stand 5 minutes. Whisk in oil, sugar, and salt. Cut peel and any white pith from grapefruit with a sharp knife, then cut sections free from membranes. Toss mustard greens with dates in a large bowl. Just before serving, toss greens with dressing and salt to taste. Divide salad between 2 plates and top with grapefruit sections. Cooks' note:• Dressing, grapefruit sections, and greens can be prepared separately 4 hours ahead and chilled, covered. (Cover greens with a dampened paper towel and plastic wrap.)