Ingredients

• 4 hard-boiled large eggs, peeled and chopped
• 2 tablespoons mayonnaise
• 2 tablespoons sour cream
• 2 tablespoons minced fresh herbs such as parsley, chives, and/or tarragon
• 1 scallion, minced
• 2 teaspoons fresh lemon juice, or to taste
• 1 teaspoon Dijon mustard
• a pinch freshly grated lemon zest
• 8 slices whole-grain bread

Instructions

1. In a bowl stir together all ingredients except bread with salt and pepper to taste until combined well.
2. Make 4 sandwiches, pressing bread slices together gently.