Tuna Sandwich - شیلتون

Ingredients

• 2 cans of tuna
• 1 cup of chopped pickles
• 1 cup of chopped celery
• 1 cup of chopped onion
• 1 cup of mayonnaise
• 1 tablespoon of lemon juice
• 1 tablespoon of mild mustard
• Salt and black pepper, to taste
• Lettuce, as needed
• Sliced bread or toast, as needed