An arrangement of green beans, radishes, egg quarters, and olives surrounds tuna and greens in this colorful salad recipe. Your family will think it's just too pretty to eat.
In a small bowl, whisk together vinegar, mustard, salt and pepper. Slowly drizzle in olive oil, whisking continuously, until mixture is evenly blended. Set aside.
Arrange lettuce over the bottom of a large serving platter. Break up tuna and place in the middle of lettuce. Arrange green beans, radishes, egg quarters and olives around tuna in a decorative fashion.
To serve, drizzle half of the dressing over the components of the salad. Serve remaining dressing on the side.