Lemon Zinger Tuna Salad

Ingredients (10)

• 3 scallions, minced
• 1 stalk celery, minced
• 1 tablespoon lemon juice
• 1 lemon, zest
• 1-2 tablespoons capers
• 1/4 cup mayonnaise
• 4-5 ounces tuna
• Arugula, for serving
• Toast, for serving
• Salt and pepper