Steamed Fiddleheads With Wild Leek Greens

Ingredients
1 pound Fiddleheads cleaned (can substitute with asparagus)
1/2 cup plain yogurt
1/2 cup mayonnaise
1 tablespoon fresh lemon juice, or to taste
3 teaspoons Dijon-style mustard
3 tablespoons finely chopped Wild Leek greens

Preparation
Steam the fiddleheads over boiling water for 5 minutes, or until they are crisp-tender. Drain, then chill in a bowl of ice and cold water to stop the cooking. When they have cooled transfer to colander to drain.
In a small bowl whisk together the yogurt, mayonnaise, lemon juice, mustard, wild leek greens. Add salt and pepper to taste, whisking until the sauce is smooth. Serve the Fiddleheads topped with the sauce.
Serves 4 to 6