A round loaf of bread instantly elevates this Egg Salad Sandwich, making it the perfect dish to serve at your next picnic.
In a medium bowl, combine eggs, mayonnaise, mustard powder, celery, salt and pepper to taste, and curry powder, if using. Gently mix until combined.
Spread the inside of the bread halves with a layer of mayonnaise and mustard, if using. Line the bottom half with radicchio and arugula leaves, and top with the egg salad. Cover with the top half, and cut the sandwich into wedges. Serve immediately.
Be sure to use good-quality whole-wheat bread.