Best Tuna Melt (New Jersey Diner Style)

Ingredients (12)

• ✓ 2 (5 ounce) cans tuna, drained
• + ¼ cup mayonnaise add to pantry
• + ¼ cup finely chopped celery add to pantry
• + 1 ½ tablespoons finely chopped onion add to pantry
• + 1 tablespoon chopped parsley add to pantry
• + ¾ teaspoon red wine vinegar add to pantry
• ✓ 1 pinch salt
• + 1 pinch freshly ground black pepper add to pantry
• + 4 slices seedless rye bread add to pantry
• + 8 slices ripe tomato add to pantry
• + 8 slices Swiss cheese add to pantry
• + paprika, for garnish add to pantry