For the Salad

• 2 pounds baby potatoes, halved
• 1 cup sour cream
• 1/2 cup mayonnaise
• 2 tablespoons fresh dill, chopped (plus extra for garnish)
• 1 tablespoon Dijon mustard
• 1–2 tablespoons lemon juice (optional, for brightness)
• 1–2 green onions or chives, finely sliced (optional, for extra flavor)
• Salt, to taste
• Freshly ground black pepper, to taste