Directions
In a bowl, combine mayonnaise, yogurt, vinegar, mustard, and dill stir to combine. Cover and refrigerate at least 1 hour for flavors to mellow. In a large saucepan of boiling water, cook potatoes until tender, 15 minutes. Preheat broiler. Sprinkle steaks with salt and pepper, brush with lime juice. Broil 45 inches from heat 34 minutes on each side. Place on individual serving plates with potatoes on the side. Spoon on dill sauce and serve.