– 4 hard-boiled eggs, chopped
– 1 can (5 ounces) of tuna, drained and flaked
– 1/4 cup mayonnaise
– 2 tablespoons of mustard
– 1/4 cup of diced celery
– 1 tablespoon of diced onion
– Salt and pepper to taste
– Optional for serving: slices of your preferred sandwich bread