small (1½-inch) red boiling potatoes
ounces smoked salmon, coarsely chopped
cup finely chopped fennel bulb (sometimes called anise)
teaspoon fresh lemon juice
cup reduced-fat sour cream
Garnish: fennel fronds or fresh dill sprigs
Cover potatoes with salted water by 1 inch in a large saucepan, then simmer, uncovered, until just tender, about 15 minutes. Drain in a colander and cool. Stir together salmon, fennel bulb, lemon juice, and salt and pepper to taste. Halve cooled potatoes and season cut sides with salt and pepper. Arrange, cut sides up, on a platter (if potatoes wobble, cut a thin slice off rounded bottoms), then dot each with 1/2 teaspoon sour cream. Mound salmon on top. Cooks' notes: ·Potatoes can be cooked 3 hours ahead and kept, covered, at room temperature. ·Salmon topping can be made 3 hours ahead and chilled, covered.