Salmon Caviar Torte

INGREDIENTS

• 1/4 cup minced fresh dill
• 1/4 cup finely chopped scallion greens
• 3/4 stick (6 tablespoons) unsalted butter, melted and cooled
• Accompaniments: pumpernickel and rye toast points
• 6 tablespoons mayonnaise
• 1/3 cup finely chopped red onion
• 8 hard-cook large eggs, chopped fine
• Garnish: dill sprigs
• 8 ounces cream cheese, softened
• 1/4 cup minced fresh chives
• 6 ounces salmon caviar
• 1 1/2 tablespoons fresh lemon juice, or to taste
• 1/2 cup finely chopped celery
• 1/2 cup sour cream