Smoked Salmon with Dilled Potato Waffles

Name: Smoked Salmon with Dilled Potato Waffles
Ingredients: 1 cup sour cream; 1/2 cup mayonnaise; 2 tablespoons chopped fresh dill; 2 teaspoons grated onion; 1 teaspoon grated lemon zest; 2 hard-boiled eggs, peeled and chopped; 2 teaspoons minced fresh parsley; Salt and freshly ground black pepper, to taste; 1 teaspoon freshly squeezed lemon juice; 4 cups mashed potatoes; 1/2 cup all-purpose flour, pre-sifted; 3 eggs; 2 tablespoons fresh dill, chopped; 1 teaspoon baking powder; Melted butter, for waffle iron; 2 cups (about 16 ounces) smoked salmon, or 2 1/2 cups grilled salmon, flaked; 11/2 cups minced whole green onions; 6 teaspoons (about 1-ounce) caviar (optional)